{"id":81205,"date":"2026-02-21T22:17:16","date_gmt":"2026-02-21T21:17:16","guid":{"rendered":"https:\/\/phillipreeve.net\/blog\/?p=81205"},"modified":"2026-03-23T12:18:32","modified_gmt":"2026-03-23T11:18:32","slug":"review-sigma-17mm-4-0-dg-dn-contemporary","status":"publish","type":"post","link":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/","title":{"rendered":"Review: Sigma 17mm 4.0 DG DN Contemporary"},"content":{"rendered":"<h2>Introduction<\/h2>\n<figure id=\"attachment_81297\" aria-describedby=\"caption-attachment-81297\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81297\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81297\" class=\"wp-caption-text\">Sigma 17mm 4.0 DG DN C on Sony A7rII<\/figcaption><\/figure>\n<p>While Sigma is mostly famous for their series of fast and big &#8220;Art&#8221; lenses they also offer a lineup of more compact and more affordable &#8220;Contemporary&#8221; lenses. At the time of writing this review, the widest prime entry of that series is this Sigma 17mm 4.0 DG DN Contemporary. Let&#8217;s have a closer look and also see how it compares to the <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a>.<\/p>\n<h2>Sample Images<\/h2>\n<figure id=\"attachment_81593\" aria-describedby=\"caption-attachment-81593\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81593\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_28.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_28.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_28-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_28-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81593\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81627\" aria-describedby=\"caption-attachment-81627\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-81627 size-full\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_29.jpg\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_29.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_29-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_29-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81627\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81586\" aria-describedby=\"caption-attachment-81586\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81586\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_21.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_21.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_21-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_21-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81586\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81587\" aria-describedby=\"caption-attachment-81587\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81587\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_22.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_22.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_22-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_22-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81587\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81598\" aria-describedby=\"caption-attachment-81598\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81598\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_5.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_5.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_5-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_5-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81598\" class=\"wp-caption-text\">Nikon Zf | Neewer ETZ | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81590\" aria-describedby=\"caption-attachment-81590\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81590\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_25.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_25.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_25-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_25-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81590\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<p><!--more--><\/p>\n<figure id=\"attachment_81576\" aria-describedby=\"caption-attachment-81576\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81576\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_5.6_7.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_5.6_7.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_5.6_7-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_5.6_7-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81576\" class=\"wp-caption-text\">Sony A7CII | Sigma 17mm 4.0 DG DN C | f\/5.6 | \u00a9 Vincent van Grevenynge<\/figcaption><\/figure>\n<figure id=\"attachment_81575\" aria-describedby=\"caption-attachment-81575\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81575\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_10.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_10.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_10-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_10-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81575\" class=\"wp-caption-text\">Sony A7CII | Sigma 17mm 4.0 DG DN C | f\/4.0 | \u00a9 Vincent van Grevenynge<\/figcaption><\/figure>\n<p><em>Most of the sample images in this review can be found in full resolution <a href=\"https:\/\/flic.kr\/s\/aHBqjCEUqR\">here<\/a>.<\/em><\/p>\n\n<h2>Specifications<\/h2>\n<p>The E-mount version of the Sigma 17mm 4.0 DG DN Contemporary has the following specifications:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Diameter: 64 mm<\/li>\n<li>Field of view: 103.7\u00b0 (diagonally)<\/li>\n<li>Length: 51 mm<\/li>\n<li>Weight: 216g (without hood[35g] and caps)<\/li>\n<li>Filter Diameter: 55 mm<\/li>\n<li>Number of Aperture Blades: 7 (slightly rounded)<\/li>\n<li>Elements\/Groups: 9\/8<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81331\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/17mm_F4_DG_DN_Contemporary_Diagram.png\" alt=\"\" width=\"300\" height=\"153\"><\/li>\n<li>Close Focusing Distance: 0.12 m<\/li>\n<li>Maximum Magnification: 1:3.0 (measured)<\/li>\n<li>Mount: Sony E, L-mount<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><em>buy from <a href=\"https:\/\/amzn.to\/42vcB1e\">amazon.de<\/a>&nbsp;| <a href=\"https:\/\/amzn.to\/3WUGRl0\">amazon.com<\/a> | <a href=\"https:\/\/www.ebay.com\/sch\/i.html?_from=R40&amp;_trksid=p2380057.m570.l1313&amp;_nkw=sigma+%2217mm%22+4+e+dg+dn&amp;_sacat=0&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.com<\/a> | <a href=\"https:\/\/www.ebay.de\/sch\/i.html?_from=R40&amp;_trksid=p2334524.m570.l1313&amp;_nkw=sigma+%2217mm%22+4+e+dg+dn&amp;_sacat=0&amp;LH_TitleDesc=0&amp;_odkw=sigma+%2217mm%22+4+e&amp;_osacat=0&amp;LH_PrefLoc=2&amp;mkcid=1&amp;mkrid=707-53477-19255-0&amp;siteid=77&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.de<\/a> | <a href=\"https:\/\/bhpho.to\/45RMSmC\">B&amp;H<\/a>&nbsp;(advertisement\/affiliate links) for <strong>$599<\/strong><\/em><\/p>\n<h2>Handling \/ Build Quality<\/h2>\n<figure id=\"attachment_81288\" aria-describedby=\"caption-attachment-81288\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81288\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81288\" class=\"wp-caption-text\">Sigma 17mm 4.0 DG DN Contemporary<\/figcaption><\/figure>\n<p>Generally Sigma did not cheap out on the build quality and controls of this series. They offer an aperture ring as well as an AF\/MF switch so compared to Sony&#8217;s later &#8220;G&#8221; and &#8220;GM&#8221; primes and most of Sigma&#8217;s &#8220;Art&#8221; lenses only the lens button is missing.&nbsp;&nbsp;<\/p>\n<p>According to Sigma&#8217;s marketing material the outer casings of these lenses are made from metal and they do feel solidly made. The focus ring has decent resistance but the coupling is not completely linear: when you rotate the ring fast it takes about 180\u00b0 from the minimum focus distance to infinity, if you turn it very slow it takes a bit longer. Not as bad as earlier Sony FE\/ZA\/Batis lenses, but still not perfectly linear.<\/p>\n<figure id=\"attachment_81296\" aria-describedby=\"caption-attachment-81296\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81296\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Hood.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Hood.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Hood-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Hood-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81296\" class=\"wp-caption-text\">Sigma 17mm 4.0 DG DN C on Sony A7rII with hood attached<\/figcaption><\/figure>\n<p>Even the lens hood is made from metal. It can be mounted reversed for transport and personally I find this lens looks much nicer with the hood attached, it does ruin its small size a bit though.<\/p>\n<figure id=\"attachment_81295\" aria-describedby=\"caption-attachment-81295\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81295\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Comparison_Viltrox_14mm_Air_FE.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"320\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Comparison_Viltrox_14mm_Air_FE.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Comparison_Viltrox_14mm_Air_FE-300x120.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Comparison_Viltrox_14mm_Air_FE-768x307.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81295\" class=\"wp-caption-text\">Viltrox AF 14mm 4.0 FE Air | Sigma 17mm 4.0 DG DN C<\/figcaption><\/figure>\n<p>The <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a> is almost the same size, it neither features an aperture ring nor an AF\/MF switch though.<\/p>\n<h2>AF performance<\/h2>\n<p>I am not shooting sports or fast moving animals\/humans so if you want to know if the lens is fast enough for this, or how it compares to other lenses in this segment, you may have to look for a different review with a more detailed assessment of this aspect.<\/p>\n<figure id=\"attachment_81294\" aria-describedby=\"caption-attachment-81294\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81294\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Adapted_Zf_Nikon.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Adapted_Zf_Nikon.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Adapted_Zf_Nikon-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Adapted_Zf_Nikon-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81294\" class=\"wp-caption-text\">Sigma 17mm 4.0 DG DN C via Neewer ETZ on Nikon Zf<\/figcaption><\/figure>\n<p>Generally the AF worked well, was reasonably fast and snappy and also completely silent.<\/p>\n<p>I tried using this lens with the Megadap ETZ21pro, Neewer ETZ and Viltrox ETZ adapter on a Nikon Zf and that also worked well. The AF was best with the Megadap, the optical performance was best with the Neewer ETZ adapter, as that seems to give the correct flange focal distance, important for internal focusing ultra wide angle lenses like this one.&nbsp;<\/p>\n<h2>Vignetting<\/h2>\n<h3>Light Falloff<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81198\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/vignetting_Sigma_17mm_4.0_DG_DN_C.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"750\" height=\"610\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/vignetting_Sigma_17mm_4.0_DG_DN_C.jpg 750w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/vignetting_Sigma_17mm_4.0_DG_DN_C-300x244.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n\n<table id=\"tablepress-270\" class=\"tablepress tablepress-id-270\">\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-1\">\n\t<td class=\"column-1\">f\/4.0<\/td><td class=\"column-2\">3.2<\/td>\n<\/tr>\n<tr class=\"row-2\">\n\t<td class=\"column-1\">f\/5.6<\/td><td class=\"column-2\">2.6<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">f\/8.0<\/td><td class=\"column-2\">2.4<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">f\/11 - f\/22<\/td><td class=\"column-2\">2.3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-270 from cache -->\n<p>For a compact ultra wide angle lens these vignetting figures are somewhat typical but still on the high side.&nbsp;<\/p>\n<p>What is especially noteworthy: the noticeably wider <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a> actually shows slightly less vignetting at f\/4.0, I didn&#8217;t expect that. The benefit of this Sigma is, that on stopping down it improves a bit more. The Viltrox shows almost the same vignetting figures at every aperture.<\/p>\n<figure id=\"attachment_81196\" aria-describedby=\"caption-attachment-81196\" style=\"width: 1026px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81196\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Vig_Graph.png\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"1026\" height=\"766\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Vig_Graph.png 1026w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Vig_Graph-300x224.png 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Vig_Graph-800x597.png 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Vig_Graph-768x573.png 768w\" sizes=\"auto, (max-width: 1026px) 100vw, 1026px\" \/><figcaption id=\"caption-attachment-81196\" class=\"wp-caption-text\">Sigma 17mm 4.0 DG DN Contemporary<\/figcaption><\/figure>\n<p><em>It is recommended to have a look at <a href=\"https:\/\/phillipreeve.net\/blog\/vignetting-graphs-explained\/\">this article<\/a> first to get an idea how this brightness graph works.<\/em><\/p>\n<h3>Color Cast<\/h3>\n<figure id=\"attachment_81685\" aria-describedby=\"caption-attachment-81685\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81685\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Color_Cast.jpg\" alt=\"\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Color_Cast.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Color_Cast-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Color_Cast-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81685\" class=\"wp-caption-text\">Sony A7rII | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<p>Lenses this wide often show a greenish\/blueish color cast on modern BSI sensors. &nbsp;With this Sigma 17mm 4.0 DG DN C I did not notice it in any of the actual pictures I took with this lens, but when taking pictures of on overcast sky or of snowy environments you may be able to spot it when looking very closely. Still, it is so little here, not really worth mentioning.<\/p>\n<h2>Sharpness<\/h2>\n<h3>infinity (42mp Sony A7rII)<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81181\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sharpness_Sigma_17mm_4.0_DG_DN_Contemporary_R2.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"1158\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sharpness_Sigma_17mm_4.0_DG_DN_Contemporary_R2.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sharpness_Sigma_17mm_4.0_DG_DN_Contemporary_R2-207x300.jpg 207w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sharpness_Sigma_17mm_4.0_DG_DN_Contemporary_R2-768x1112.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<figure id=\"attachment_81189\" aria-describedby=\"caption-attachment-81189\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81189\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sharpness_Infinity_R2_11.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sharpness_Infinity_R2_11.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sharpness_Infinity_R2_11-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sharpness_Infinity_R2_11-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81189\" class=\"wp-caption-text\">Sony A7rII | Sigma 17mm 4.0 DG DN C | f\/11<\/figcaption><\/figure>\n<p>The Sigma 17mm 4.0 DG DN C shows a good performance in this category. Most of the frame already looks very good from f\/4.0, only the corners are a little softer. Peak across frame performance is reached from f\/5.6 to f\/8.0.<\/p>\n<p>The <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a> actually showed a more impressive across frame performance at f\/4.0, as the corners looked better.&nbsp;<\/p>\n<h3>close (0.12m, 1:3.0)<\/h3>\n<p><div class=\"osc-res-tab tabbable   osc-tabs-left\"><div style=\"clear:both;width: 100%;\"><ul class=\"nav osc-res-nav nav-tabs osc-tabs-left-ul\" id=\"oscitas-restabs-1-review-sigma-17mm-4-0-dg-dn-contemporary-17284\"><li class=\"active\"><a href=\"#ert_pane1-0\" data-toggle=\"tab\">f\/4.0<\/a><\/li><li class=\"\"><a href=\"#ert_pane1-1\" data-toggle=\"tab\">f\/5.6<\/a><\/li><li class=\"\"><a href=\"#ert_pane1-2\" data-toggle=\"tab\">f\/8.0<\/a><\/li><\/ul><\/div><div style=\"clear:both;width: 100%;\"><ul class=\"tab-content\" id=\"oscitas-restabcontent-1-review-sigma-17mm-4-0-dg-dn-contemporary-17284\"><li class=\"tab-pane active\" id=\"ert_pane1-0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81315\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane1-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81314\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_5.6.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_5.6.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_5.6-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_5.6-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane1-2\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81315\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sharpness_Close_R2_100_8.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><\/ul><\/div><\/div><span style=\"color: #999999;\"><em>Sony A7rII | Sigma 17mm 4.0 DG DN C | 100% crops from center<\/em><\/span><\/p>\n<p>A standout feature of this Sigma is its short minimum focus distance and high macro-like maximum magnification of 1:3.0. In the central part also the image quality is surprisingly good from wide open. Except for Laowa&#8217;s 15mm ultra wide angle macro lenses this is the closest focusing ultra wide angle lens I am aware of, surely nice to have.<\/p>\n<p>There are a few things to be aware of though: at the minimum focus distance you subject will almost touch your front element, which makes lighting your subject difficult and there is high field curvature here, so this is not a great lens to take pictures of flat objects at 1:3.0 magnification &#8211; not that I am aware of an actual use case for a 17mm lens for that.<\/p>\n<h2>Flare resistance<\/h2>\n<p>I have definitely seen some affordable ultra wide angle lenses struggle in this category which is always unfortunate, as with such wide viewing angles there is also a high likelihood to catch the sun or another strong point light source in the frame.<\/p>\n<p>While Sigma&#8217;s modern lenses generally perform well in many categories, Flare resistance hasn&#8217;t always been one of those.<\/p>\n<p><div class=\"osc-res-tab tabbable   osc-tabs-left\"><div style=\"clear:both;width: 100%;\"><ul class=\"nav osc-res-nav nav-tabs osc-tabs-left-ul\" id=\"oscitas-restabs-2-review-sigma-17mm-4-0-dg-dn-contemporary-55646\"><li class=\"active\"><a href=\"#ert_pane2-0\" data-toggle=\"tab\">Pos1<\/a><\/li><li class=\"\"><a href=\"#ert_pane2-1\" data-toggle=\"tab\">Pos2<\/a><\/li><li class=\"\"><a href=\"#ert_pane2-2\" data-toggle=\"tab\">Pos3<\/a><\/li><li class=\"\"><a href=\"#ert_pane2-3\" data-toggle=\"tab\">Pos4<\/a><\/li><li class=\"\"><a href=\"#ert_pane2-4\" data-toggle=\"tab\">Pos5<\/a><\/li><li class=\"\"><a href=\"#ert_pane2-5\" data-toggle=\"tab\">Pos6<\/a><\/li><\/ul><\/div><div style=\"clear:both;width: 100%;\"><ul class=\"tab-content\" id=\"oscitas-restabcontent-2-review-sigma-17mm-4-0-dg-dn-contemporary-55646\"><li class=\"tab-pane active\" id=\"ert_pane2-0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81337\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos1.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos1.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos1-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos1-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane2-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81338\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos2.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos2.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos2-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos2-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane2-2\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81339\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos3.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos3.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos3-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos3-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane2-3\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81340\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos4.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos4.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos4-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos4-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane2-4\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81341\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos5.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos5.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos5-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos5-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane2-5\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81342\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos6.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos6.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos6-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_4.0_Pos6-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><\/ul><\/div><\/div><br \/>\n<span style=\"color: #999999;\"><em>Nikon Zf | Sigma 17mm 4.0 DN DN C | f\/4.0<\/em><\/span><\/p>\n<p>At its maximum aperture we can only see some small artefacts, not something with a lot of potential to ruin your shots.<\/p>\n<p><div class=\"osc-res-tab tabbable   osc-tabs-left\"><div style=\"clear:both;width: 100%;\"><ul class=\"nav osc-res-nav nav-tabs osc-tabs-left-ul\" id=\"oscitas-restabs-3-review-sigma-17mm-4-0-dg-dn-contemporary-47245\"><li class=\"active\"><a href=\"#ert_pane3-0\" data-toggle=\"tab\">Pos1<\/a><\/li><li class=\"\"><a href=\"#ert_pane3-1\" data-toggle=\"tab\">Pos2<\/a><\/li><li class=\"\"><a href=\"#ert_pane3-2\" data-toggle=\"tab\">Pos3<\/a><\/li><li class=\"\"><a href=\"#ert_pane3-3\" data-toggle=\"tab\">Pos4<\/a><\/li><li class=\"\"><a href=\"#ert_pane3-4\" data-toggle=\"tab\">Pos5<\/a><\/li><li class=\"\"><a href=\"#ert_pane3-5\" data-toggle=\"tab\">Pos6<\/a><\/li><\/ul><\/div><div style=\"clear:both;width: 100%;\"><ul class=\"tab-content\" id=\"oscitas-restabcontent-3-review-sigma-17mm-4-0-dg-dn-contemporary-47245\"><li class=\"tab-pane active\" id=\"ert_pane3-0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81343\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos1.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos1.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos1-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos1-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane3-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81344\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos2.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos2.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos2-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos2-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane3-2\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81345\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos3.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos3.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos3-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos3-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane3-3\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81346\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos4.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos4.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos4-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos4-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane3-4\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81347\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos5.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos5.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos5-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos5-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane3-5\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81348\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos6.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos6.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos6-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Flare_11_Pos6-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><\/ul><\/div><\/div><br \/>\n<span style=\"color: #999999;\"><em>Nikon Zf | Sigma 17mm 4.0 DN DN C | f\/11<\/em><\/span><\/p>\n<p>Stopped down these small ghosts can be a bit more obvious but the contrast always stays on a high level. Still a good performance.<\/p>\n<p>The <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a> showed a similarly good performance. The <a href=\"https:\/\/phillipreeve.net\/blog\/review-laowa-15mm-5-0-cookie-tiny-and-useful\/\">Laowa 15mm 5.0 Cookie<\/a> clearly performed worse as did the <a href=\"https:\/\/phillipreeve.net\/blog\/review-7artisans-15mm-4-0-asph\/\">7Artisans 15mm 4.0<\/a>. The <a href=\"https:\/\/phillipreeve.net\/blog\/review-nisi-15mm-4-0-asph\/\">NiSi 15mm 4.0<\/a> was one of the better affordable ultra wide angle lenses in this category and also showed a similarly good performance.<\/p>\n<h2>Coma<\/h2>\n<p><div class=\"osc-res-tab tabbable   osc-tabs-left\"><div style=\"clear:both;width: 100%;\"><ul class=\"nav osc-res-nav nav-tabs osc-tabs-left-ul\" id=\"oscitas-restabs-4-review-sigma-17mm-4-0-dg-dn-contemporary-23064\"><li class=\"active\"><a href=\"#ert_pane4-0\" data-toggle=\"tab\">f\/4.0<\/a><\/li><li class=\"\"><a href=\"#ert_pane4-1\" data-toggle=\"tab\">f\/5.6<\/a><\/li><li class=\"\"><a href=\"#ert_pane4-2\" data-toggle=\"tab\">f\/8.0<\/a><\/li><\/ul><\/div><div style=\"clear:both;width: 100%;\"><ul class=\"tab-content\" id=\"oscitas-restabcontent-4-review-sigma-17mm-4-0-dg-dn-contemporary-23064\"><li class=\"tab-pane active\" id=\"ert_pane4-0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81182\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_4.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_4.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_4.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_4.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane4-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81183\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_5.6.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_5.6.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_5.6-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_5.6-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane4-2\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81184\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_8.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_8.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_8.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Coma_R2_100_8.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><\/ul><\/div><\/div><span style=\"color: #999999;\"><em>Sony A7rII | Sigma 17mm 4.0 DG DN C | 100% crops from extreme corner<\/em><\/span><\/p>\n<p>If you are looking for an ultra wide angle lens for landscape astrophotography I would recommend to look for a faster lens to begin with &#8211; already because of its slowish f\/4.0 maximum aperture. Despite that slow maximum aperture, the Coma correction actually leaves something to be desired, stopping down to f\/5.6 is a good idea to get rid of most of the artefacts. Also in this category the <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a> showed a better performance with almost no visible artefacts at its maximum aperture.<\/p>\n<h2>Distortion<\/h2>\n<p><div class=\"osc-res-tab tabbable   osc-tabs-left\"><div style=\"clear:both;width: 100%;\"><ul class=\"nav osc-res-nav nav-tabs osc-tabs-left-ul\" id=\"oscitas-restabs-5-review-sigma-17mm-4-0-dg-dn-contemporary-44414\"><li class=\"active\"><a href=\"#ert_pane5-0\" data-toggle=\"tab\">uncorrected<\/a><\/li><li class=\"\"><a href=\"#ert_pane5-1\" data-toggle=\"tab\">corrected<\/a><\/li><\/ul><\/div><div style=\"clear:both;width: 100%;\"><ul class=\"tab-content\" id=\"oscitas-restabcontent-5-review-sigma-17mm-4-0-dg-dn-contemporary-44414\"><li class=\"tab-pane active\" id=\"ert_pane5-0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81625\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion_Corrected.jpg\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion_Corrected.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion_Corrected-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion_Corrected-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane5-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81626\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion.jpg\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Distortion-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><\/ul><\/div><\/div><span style=\"color: #999999;\"><em>Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/em><\/span><\/p>\n<p>Like many of Sigma&#8217;s recent lenses, also this 17mm 4.0 DG DN C shows strong distortion. For Jpegs this can already be corrected in camera, for Raw files luckily Lightroom and Photoshop feature a correction profile which does a good job.<\/p>\n<h2>Bokeh<\/h2>\n<figure id=\"attachment_81582\" aria-describedby=\"caption-attachment-81582\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81582\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_16.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_16.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_16-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_16-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81582\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<p>Now obviously this is not a lens you should buy if you are into shallow depth of field photography. Nevertheless, in close focus scenarios you can actually create some bokeh and the quality is quite alright.<\/p>\n<figure id=\"attachment_81574\" aria-describedby=\"caption-attachment-81574\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81574\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_9.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_9.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_9-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_9-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81574\" class=\"wp-caption-text\">Sony A7CII | Sigma 17mm 4.0 DG DN C | f\/4.0 | \u00a9 Vincent van Grevenynge<\/figcaption><\/figure>\n<p>Even at only slightly longer focus distances you will hardly notice the background being barely out of focus.&nbsp;<\/p>\n<h2>Sunstars<\/h2>\n<p><div class=\"osc-res-tab tabbable   osc-tabs-left\"><div style=\"clear:both;width: 100%;\"><ul class=\"nav osc-res-nav nav-tabs osc-tabs-left-ul\" id=\"oscitas-restabs-6-review-sigma-17mm-4-0-dg-dn-contemporary-72959\"><li class=\"active\"><a href=\"#ert_pane6-0\" data-toggle=\"tab\">f\/4.0<\/a><\/li><li class=\"\"><a href=\"#ert_pane6-1\" data-toggle=\"tab\">f\/5.6<\/a><\/li><li class=\"\"><a href=\"#ert_pane6-2\" data-toggle=\"tab\">f\/8.0<\/a><\/li><li class=\"\"><a href=\"#ert_pane6-3\" data-toggle=\"tab\">f\/11<\/a><\/li><li class=\"\"><a href=\"#ert_pane6-4\" data-toggle=\"tab\">f\/16<\/a><\/li><li class=\"\"><a href=\"#ert_pane6-5\" data-toggle=\"tab\">f\/22<\/a><\/li><\/ul><\/div><div style=\"clear:both;width: 100%;\"><ul class=\"tab-content\" id=\"oscitas-restabcontent-6-review-sigma-17mm-4-0-dg-dn-contemporary-72959\"><li class=\"tab-pane active\" id=\"ert_pane6-0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81190\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_4.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_4.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_4.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_4.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane6-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81191\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_5.6.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_5.6.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_5.6-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_5.6-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane6-2\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81192\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_8.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_8.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_8.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_8.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane6-3\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81193\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_11.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_11.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_11-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_11-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane6-4\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81194\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_16.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_16.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_16-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_16-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane6-5\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81195\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_22.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_22.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_22-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_Sunstars_R2_50_22-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><\/ul><\/div><\/div><span style=\"color: #999999;\"><em>Sony A7rII | Sigma 17mm 4.0 DG DN C | 50% crops from center<\/em><\/span><\/p>\n<p>Sunstars are not high on Sigma&#8217;s priority list. Their newer lenses do a bit better here than the older ones though. Still, for distinct sunstars you need to stop down to f\/22, which means you are deep in diffraction territory robbing you of resolution and contrast.<br \/>\nIf nice sunstars are important to you, maybe have a look at the <a href=\"https:\/\/phillipreeve.net\/blog\/review-laowa-15mm-5-0-cookie-tiny-and-useful\/\">Laowa 15mm 5.0 Cookie<\/a>, the <a href=\"https:\/\/phillipreeve.net\/blog\/review-voigtlander-15mm-4-5-e-super-wide-heliar\/\">Voigtl\u00e4nder 15mm 4.5 E<\/a> or the <a href=\"https:\/\/phillipreeve.net\/blog\/review-nisi-15mm-4-0-asph\/\">NiSi 15mm 4.0<\/a>.<br \/>\nIf you want to learn more about sunstars have a look at <a href=\"https:\/\/phillipreeve.net\/blog\/best-lenses-for-sunstars\/\">this article<\/a>.<\/p>\n<h2>Chromatic Aberrations<\/h2>\n<h3><strong>lateral<\/strong><em><br \/>\n<\/em><\/h3>\n<p>This Sigma 17mm 4.0 DN DN C features a built-in lens correction profile for lateral CA that will also be recognized in most raw converters, so in the end: you won\u2019t see any.<\/p>\n<h3><strong>longitudinal<\/strong><\/h3>\n<p><div class=\"osc-res-tab tabbable   osc-tabs-left\"><div style=\"clear:both;width: 100%;\"><ul class=\"nav osc-res-nav nav-tabs osc-tabs-left-ul\" id=\"oscitas-restabs-7-review-sigma-17mm-4-0-dg-dn-contemporary-91530\"><li class=\"active\"><a href=\"#ert_pane7-0\" data-toggle=\"tab\">background<\/a><\/li><li class=\"\"><a href=\"#ert_pane7-1\" data-toggle=\"tab\">foreground<\/a><\/li><\/ul><\/div><div style=\"clear:both;width: 100%;\"><ul class=\"tab-content\" id=\"oscitas-restabcontent-7-review-sigma-17mm-4-0-dg-dn-contemporary-91530\"><li class=\"tab-pane active\" id=\"ert_pane7-0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81186\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_BG_R2_100_4.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_BG_R2_100_4.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_BG_R2_100_4.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_BG_R2_100_4.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><li class=\"tab-pane \" id=\"ert_pane7-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-81187\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_FG_R2_100_4.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_FG_R2_100_4.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_FG_R2_100_4.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_BF_FG_R2_100_4.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/li><\/ul><\/div><\/div><span style=\"color: #999999;\"><em>Sony A7rII | Sigma 17mm 4.0 DG DN C | 50% crops<\/em><\/span><\/p>\n<p>Rather slow ultra wide angle lenses usually do not have any problems in this category. That being said this lens shows a little more magenta and cyan outlining than many of its modern competitors.<\/p>\n<figure id=\"attachment_81188\" aria-describedby=\"caption-attachment-81188\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81188\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_PF_R2_100_4.0.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"534\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_PF_R2_100_4.0.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_PF_R2_100_4.0-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_C_loCA_PF_R2_100_4.0-768x513.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81188\" class=\"wp-caption-text\">Sony A7rII | Sigma 17mm 4.0 DG DN C | f4.0 | 100% crop<\/figcaption><\/figure>\n<p>Also purple fringing is on a higher level than I would have expected. The <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a> clearly performed better in this category.<\/p>\n<h2>Conclusion<\/h2>\n<table>\n<tbody>\n<tr>\n<td><strong>good<\/strong><\/p>\n<ul>\n<li><span style=\"color: #339966;\">high contrast and resolution from f\/4.0<\/span><\/li>\n<li><span style=\"color: #339966;\">flare resistance<\/span><\/li>\n<li><span style=\"color: #339966;\">focuses very close (1:3.0 magnification)<\/span><\/li>\n<li><span style=\"color: #339966;\">compact and lightweight<\/span><\/li>\n<li><span style=\"color: #339966;\">handling\/build quality<\/span><\/li>\n<\/ul>\n<\/td>\n<td><strong>average<\/strong><\/p>\n<ul>\n<li>Coma correction<\/li>\n<li>CA correction<\/li>\n<\/ul>\n<\/td>\n<td><strong>not good<\/strong><\/p>\n<ul>\n<li><span style=\"color: #ff0000;\">high vignetting<\/span><\/li>\n<li><span style=\"color: #ff9900;\">high distortion in raw files<\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>As is easily visible from the table above this Sigma 17mm 4.0 DG DN Contemporary is generally a well rounded lens without any outstanding flaws.&nbsp;<\/p>\n<p>Its problem is, that &#8211; compared to the recent competitors &#8211; it doesn&#8217;t really knock it out of the park for me. If you are merely looking for a compact affordable ultra wide angle prime I&#8217;d say the <a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a> does a better job at that. Not only is it even lighter and a lot cheaper, it actually performed better in many categories.<\/p>\n<p>Then for 200 bucks more you can get the <a href=\"https:\/\/phillipreeve.net\/blog\/review-sony-fe-16mm-1-8-g\/\">Sony FE 16mm 1.8 G<\/a>, one of the best ultra wide angle lenses I have seen so far and more than two stops faster, opening up a lot of possibilities.<\/p>\n<p>The arguments left in favour of this Sigma 17mm 4.0 lens are its nice metal casing, but is that really enough? I am not sure about that.<\/p>\n<p><em>buy from <a href=\"https:\/\/amzn.to\/42vcB1e\">amazon.de<\/a>&nbsp;| <a href=\"https:\/\/amzn.to\/3WUGRl0\">amazon.com<\/a> | <a href=\"https:\/\/www.ebay.com\/sch\/i.html?_from=R40&amp;_trksid=p2380057.m570.l1313&amp;_nkw=sigma+%2217mm%22+4+e+dg+dn&amp;_sacat=0&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.com<\/a> | <a href=\"https:\/\/www.ebay.de\/sch\/i.html?_from=R40&amp;_trksid=p2334524.m570.l1313&amp;_nkw=sigma+%2217mm%22+4+e+dg+dn&amp;_sacat=0&amp;LH_TitleDesc=0&amp;_odkw=sigma+%2217mm%22+4+e&amp;_osacat=0&amp;LH_PrefLoc=2&amp;mkcid=1&amp;mkrid=707-53477-19255-0&amp;siteid=77&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.de<\/a> | <a href=\"https:\/\/bhpho.to\/45RMSmC\">B&amp;H<\/a>&nbsp;(advertisement\/affiliate links) for <strong>$599<\/strong><\/em><\/p>\n<h2>Alternatives<\/h2>\n<p>You can find many of the modern ultra wide angle zoom as well as prime lenses discussed in our <a href=\"https:\/\/phillipreeve.net\/blog\/user-guide-ultra-wideangle-lenses-sony-alpha-7-series\/\">Guide to Ultra Wide Angle Lenses for the A7 Series<\/a>. There are a few lenses worth mentioning in more detail though:<\/p>\n<h3>Autofocus<\/h3>\n<p><strong><em><a href=\"https:\/\/phillipreeve.net\/blog\/review-viltrox-af-14mm-4-0-fe\/\">Viltrox AF 14mm 4.0 FE Air<\/a>:<\/em><\/strong><br \/>\nNow 17mm and 14mm are a significant difference. If you are not that fixated on the focal length the Viltrox lens is actually easier to recommend. It only costs a third of the Sigma while I actually found it to perform a bit better. What this Sigma has going for it are the nicer materials and better controls.<br \/>\n<em>buy from <a href=\"https:\/\/viltroxstore.com\/collections\/e-mount?ref=r67n83i6\">manufacturer&#8217;s shop<\/a> (comes with a 5% discount) | <a href=\"https:\/\/www.bhphotovideo.com\/c\/search?N=0&amp;InitialSearch=yes&amp;Ntt=viltrox%2014mm&amp;BI=21073&amp;KBID=18855&amp;SID=DFF&amp;DFF=d50\">B&amp;H<\/a> | <a href=\"https:\/\/www.ebay.com\/sch\/i.html?_nkw=viltrox+14mm+4.0&amp;_sacat=0&amp;_from=R40&amp;_trksid=p4432023.m570.l1313&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.com<\/a> | <a href=\"https:\/\/www.ebay.de\/sch\/i.html?_nkw=viltrox+14mm+4.0&amp;_sacat=0&amp;_from=R40&amp;_trksid=m570.l1313&amp;mkcid=1&amp;mkrid=707-53477-19255-0&amp;siteid=77&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.de<\/a> (advertisement\/affiliate links) for <strong>$199<\/strong><\/em><\/p>\n<p><a href=\"https:\/\/phillipreeve.net\/blog\/review-sony-fe-16mm-1-8-g\/\"><em><strong>Sony FE 16mm 1.8 G:<\/strong><\/em><\/a><br \/>\nThe Sony FE 16mm 1.8 G &#8211; if you find a good copy &#8211; is an amazing lens that performs well (meaning better than this Sigma lens) in pretty much every category. It is only 90g heavier but more than two stops faster. Personally, if you have the 600 bucks for this Sigma, save a bit more and buy the Sony FE 16mm 1.8 G.&nbsp;<br \/>\n<em>buy from <a href=\"https:\/\/amzn.to\/42POoVZ\">amazon.com<\/a> | <a href=\"https:\/\/amzn.to\/3XXHEDL\">amazon.de<\/a> | <a href=\"https:\/\/www.ebay.com\/sch\/i.html?_nkw=sony+fe+16mm+1.8&amp;_sacat=0&amp;_from=R40&amp;_trksid=p4432023.m570.l1313&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.com<\/a> | <a href=\"https:\/\/www.ebay.de\/sch\/i.html?_nkw=sony+fe+16mm+1.8&amp;_sacat=0&amp;_from=R40&amp;_trksid=p4432023.m570.l1313&amp;mkcid=1&amp;mkrid=707-53477-19255-0&amp;siteid=77&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.de<\/a> | <a href=\"https:\/\/bhpho.to\/3RbkkP5\">B&amp;H<\/a> (advertisement\/affiliate links) for <strong>$798<\/strong><\/em><\/p>\n<p><a href=\"https:\/\/phillipreeve.net\/blog\/review-samyang-af-18mm-2-8-fe-the-affordable-uwa-lens\/\"><em><strong>Samyang AF 18mm 2.8 FE:<\/strong><\/em><\/a><br \/>\nThe Samyang used to be my budget recommendation when looking for an ultra wide angle lens with autofocus, but these days I rather recommend the aforementioned Viltrox lens which not only performs better in pretty much every way but is also cheaper.<br \/>\n<em>buy from <a href=\"https:\/\/amzn.to\/32CaFIy\">amazon.com<\/a> | <a href=\"https:\/\/amzn.to\/2IucdNk\">amazon.de<\/a> | <a href=\"https:\/\/bhpho.to\/3pldib8\">B&amp;H<\/a> | <a href=\"https:\/\/www.ebay.com\/sch\/i.html?_from=R40&amp;_trksid=p2334524.m570.l1313&amp;_nkw=samyang+18+2.8&amp;_sacat=0&amp;LH_TitleDesc=0&amp;_osacat=0&amp;_odkw=sony+200-600&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;mkcid=1&amp;campid=5337820130&amp;toolid=20008&amp;mkevt=1\">ebay.com <\/a> (advertisement\/affiliate links) for <strong>$299<\/strong>&nbsp;<\/em><\/p>\n<h3>Manual Focus<\/h3>\n<p><a href=\"https:\/\/phillipreeve.net\/blog\/review-laowa-15mm-5-0-cookie-tiny-and-useful\/\"><b><i>Laowa 15mm 5.0 Cookie:<br \/>\n<\/i><\/b><\/a>The Laowa 15mm 5.0 Cookie is a little slower and a little wider. It is even smaller and was one of Laowa&#8217;s first lenses to feature electronic contacts but no autofocus. As this Sigma as well as the Viltrox 14mm lenses are both a bit stronger optically, the Laowa 15mm 5.0 mainly makes sense if you are after well defined sunstars &#8211; or as small size as possible.<br \/>\n<em>buy from <a href=\"https:\/\/www.venuslens.net\/product\/laowa-15mm-f-5-cookie-ff\/ref\/57\/\">manufacturer&#8217;s shop<\/a> | <a href=\"https:\/\/www.bhphotovideo.com\/c\/search?q=laowa%2015mm%205&amp;sts=ma&amp;BI=21073&amp;KBID=18855&amp;SID=DFF\">B&amp;H<\/a> | <a href=\"https:\/\/www.ebay.com\/sch\/i.html?_from=R40&amp;_trksid=p4432023.m570.l1313&amp;_nkw=laowa+15mm+5.0&amp;_sacat=0&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5337820268&amp;toolid=20008&amp;mkevt=1\">ebay.com<\/a> | <a href=\"https:\/\/amzn.to\/3NKASvF\">amazon.com<\/a> for <strong>$399<\/strong> (advertisement\/affiliate links)<\/em><\/p>\n<p><a href=\"https:\/\/phillipreeve.net\/blog\/review-voigtlander-15mm-4-5-e-super-wide-heliar\/\"><b><i>Voigtl\u00e4nder 15mm 4.5 E:<br \/>\n<\/i><\/b><\/a>The Voigtl\u00e4nder 15mm 4.5 E was one of the first third party ultra wide angle lenses for the Sony E-mount. There were issues with sample variation, it has super high vignetting and creates beautiful sunstars. These days also here &#8211; especially for less than half the price &#8211; the Viltrox 14mm 4.0 looks like a better deal.<br \/>\n<em>buy from <a href=\"https:\/\/amzn.to\/38ftCAs\">amazon.com<\/a> | <a href=\"https:\/\/amzn.to\/2t5Mpwv\">amazon.de<\/a> | <a href=\"https:\/\/bhpho.to\/2yhgMoz\">B&amp;H<\/a> | <a href=\"https:\/\/www.ebay.com\/sch\/i.html?LH_CAds=&amp;_ex_kw=&amp;_fpos=&amp;_fspt=1&amp;_mPrRngCbx=1&amp;_nkw=Voigtlander+15mm+4.5+E&amp;_sacat=625&amp;_sadis=&amp;_sop=12&amp;_udhi=&amp;_udlo=&amp;_fosrp=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;mkcid=1&amp;campid=5337820268&amp;toolid=10001&amp;customid=&amp;mkevt=1\">ebay.com<\/a> | <a href=\"https:\/\/www.ebay.de\/sch\/i.html?_ex_kw=&amp;_mPrRngCbx=1&amp;_nkw=voigtl%25E4nder+15mm+4.5+e+iii&amp;_sacat=625&amp;_sop=12&amp;_udhi=&amp;_udlo=&amp;_fosrp=1&amp;mkrid=707-53477-19255-0&amp;siteid=77&amp;mkcid=1&amp;campid=5337820268&amp;toolid=10001&amp;customid=&amp;mkevt=1\">ebay.de<\/a> (advertisement\/affiliate links) for <strong>$549<\/strong><\/em><\/p>\n<p><em><strong><a href=\"https:\/\/phillipreeve.net\/blog\/review-nisi-15mm-4-0-asph\/\">NiSi 15mm 4.0 Asph:<\/a><\/strong><\/em><br \/>\nThis NiSi 15mm 4.0 Asph is a solid performer and was one of the cheapest ultra wide options when it was released. As it is much bigger and heavier and not a lot cheaper and features neither autofocus nor electronic contacts it looks a bit outdated next to this Sigma 17mm 4.0 or the Viltrox 14mm 4.0. Like the two aforementioned lenses it also creates very appealing sunstars though.<br \/>\n<em>buy from <a href=\"https:\/\/bhpho.to\/3qne2hj\">B&amp;H<\/a> | <a href=\"https:\/\/ebay.us\/DCedrC\">ebay.com<\/a> | <a href=\"https:\/\/amzn.to\/33Y5plY\">amazon.com<\/a> | <a href=\"https:\/\/amzn.to\/3sycVy4\">amazon.de<\/a> for <strong>$479\/479\u20ac<\/strong> (advertisement\/affiliate links)<\/em><\/p>\n<h2>Sample Images<\/h2>\n<figure id=\"attachment_81581\" aria-describedby=\"caption-attachment-81581\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81581\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_15.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_15.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_15-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_15-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81581\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81628\" aria-describedby=\"caption-attachment-81628\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-81628 size-full\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_30.jpg\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_30.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_30-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_30-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81628\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81584\" aria-describedby=\"caption-attachment-81584\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81584\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_19.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_19.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_19-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_19-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81584\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81583\" aria-describedby=\"caption-attachment-81583\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81583\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_18.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_18.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_18-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_18-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81583\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81585\" aria-describedby=\"caption-attachment-81585\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81585\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_20.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_20.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_20-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_20-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81585\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81588\" aria-describedby=\"caption-attachment-81588\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81588\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_23.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_23.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_23-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_23-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81588\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81579\" aria-describedby=\"caption-attachment-81579\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81579\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_13.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_13.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_13-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7III_4.0_13-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81579\" class=\"wp-caption-text\">Sony A7III | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81594\" aria-describedby=\"caption-attachment-81594\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81594\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_1.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_1.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_1-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_1-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81594\" class=\"wp-caption-text\">Nikon Zf | Neewer ETZ | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81595\" aria-describedby=\"caption-attachment-81595\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81595\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_2.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_2.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_2-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_2-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81595\" class=\"wp-caption-text\">Nikon Zf | Neewer ETZ | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81597\" aria-describedby=\"caption-attachment-81597\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81597\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_4.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_4.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_4-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_Zf_4.0_4-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81597\" class=\"wp-caption-text\">Nikon Zf | Neewer ETZ | Sigma 17mm 4.0 DG DN C | f\/4.0<\/figcaption><\/figure>\n<figure id=\"attachment_81578\" aria-describedby=\"caption-attachment-81578\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81578\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_12.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_12.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_12-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_12-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81578\" class=\"wp-caption-text\">Sony A7CII | Sigma 17mm 4.0 DG DN C | f\/8.0 | \u00a9 Vincent van Grevenynge<\/figcaption><\/figure>\n<figure id=\"attachment_81577\" aria-describedby=\"caption-attachment-81577\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81577\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_11.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_11.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_11-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_8.0_11-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81577\" class=\"wp-caption-text\">Sony A7CII | Sigma 17mm 4.0 DG DN C | f\/8.0 | \u00a9 Vincent van Grevenynge<\/figcaption><\/figure>\n<figure id=\"attachment_81573\" aria-describedby=\"caption-attachment-81573\" style=\"width: 800px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-81573\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_8.jpg\" alt=\"sigma 17mm 4.0 dg dn c contemporarly e fe l small review sharpness contrast bokeh coma vignetting 42mp 63mp sony a7 a7rii a7iii a7riv a7rv a7iv a1 a9 a9ii\" width=\"800\" height=\"533\" srcset=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_8.jpg 800w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_8-300x200.jpg 300w, https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Sample_A7CII_4.0_8-768x512.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-81573\" class=\"wp-caption-text\">Sony A7CII | Sigma 17mm 4.0 DG DN C | f\/4.0 | \u00a9 Vincent van Grevenynge<\/figcaption><\/figure>\n<p><em>Most of the sample images in this review can be found in full resolution <a href=\"https:\/\/flic.kr\/s\/aHBqjCEUqR\">here<\/a>.<\/em><\/p>\n<h2>Further Reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/phillipreeve.net\/blog\/user-guide-ultra-wideangle-lenses-sony-alpha-7-series\/\">Guide to 9-18mm Ultra Wide Angle Lenses<\/a><\/li>\n<li><a href=\"https:\/\/phillipreeve.net\/blog\/review-laowa-9mm-5-6-ff-rl\/\">Review: Laowa 9mm 5.6 &#8211; The World&#8217;s Widest fullframe lens<\/a><\/li>\n<li><a href=\"https:\/\/phillipreeve.net\/blog\/review-sony-fe-12-24mm-2-8-gm\/\">Review: Sony FE 12-24mm 2.8 GM<\/a><\/li>\n<li><a href=\"https:\/\/phillipreeve.net\/blog\/review-sony-fe-16mm-1-8-g\/\">Review: Sony FE 16mm 1.8 G<\/a><\/li>\n<li><a href=\"https:\/\/phillipreeve.net\/blog\/photography\/analogue-adventures\/\">Analogue Adventures<\/a><\/li>\n<\/ul>\n<h2>Support Us<\/h2>\n<p>Did you find this article useful or just liked reading it? Treat us to a coffee!<br \/>\n<a href=\"https:\/\/www.paypal.com\/donate\/?hosted_button_id=3K9EJRRQVXT4J\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-40345 size-full\" src=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2023\/06\/donate2.png\" alt=\"\" width=\"103\" height=\"29\"><\/a><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.paypal.com\/en_SE\/i\/scr\/pixel.gif\" alt=\"\" width=\"1\" height=\"1\" border=\"0\"> <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.paypal.com\/en_SE\/i\/scr\/pixel.gif\" alt=\"\" width=\"1\" height=\"1\" border=\"0\"><em>via Paypal<\/em><\/p>\n<p>This site contains advertisement\/affiliate links. If you make a purchase using any of the links marked as advertisement\/affiliate links, I may receive a small commission at no additional cost to you. This helps support the creation of future content.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction While Sigma is mostly famous for their series of fast and big &#8220;Art&#8221; lenses they also offer a lineup of more compact and more affordable &#8220;Contemporary&#8221; lenses. At the time of writing this review, the widest prime entry of that series is this Sigma 17mm 4.0 DG DN Contemporary. Let&#8217;s have a closer look &hellip; <a href=\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Review: Sigma 17mm 4.0 DG DN Contemporary<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4708,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[18,215,21],"tags":[],"class_list":["post-81205","post","type-post","status-publish","format-standard","hentry","category-review","category-sigma","category-sony-e-mount"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Review: Sigma 17mm 4.0 DG DN Contemporary - phillipreeve.net<\/title>\n<meta name=\"description\" content=\"The Sigma 17mm 4.0 DG DN Contemporary is a compact ultra wide angle lens with AF and an all metal casing, but can it compete with\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Review: Sigma 17mm 4.0 DG DN Contemporary - phillipreeve.net\" \/>\n<meta property=\"og:description\" content=\"The Sigma 17mm 4.0 DG DN Contemporary is a compact ultra wide angle lens with AF and an all metal casing, but can it compete with\" \/>\n<meta property=\"og:url\" content=\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/\" \/>\n<meta property=\"og:site_name\" content=\"phillipreeve.net\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/bastian.kratzke\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-21T21:17:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-23T11:18:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2_FB.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"BastianK\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"BastianK\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"26 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/\",\"url\":\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/\",\"name\":\"Review: Sigma 17mm 4.0 DG DN Contemporary - phillipreeve.net\",\"isPartOf\":{\"@id\":\"https:\/\/phillipreeve.net\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg\",\"datePublished\":\"2026-02-21T21:17:16+00:00\",\"dateModified\":\"2026-03-23T11:18:32+00:00\",\"author\":{\"@id\":\"https:\/\/phillipreeve.net\/blog\/#\/schema\/person\/9b7aa081afe07a6cae2e7d1ea1b476d7\"},\"description\":\"The Sigma 17mm 4.0 DG DN Contemporary is a compact ultra wide angle lens with AF and an all metal casing, but can it compete with\",\"breadcrumb\":{\"@id\":\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#primaryimage\",\"url\":\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg\",\"contentUrl\":\"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg\",\"width\":800,\"height\":533,\"caption\":\"Sigma 17mm 4.0 DG DN C on Sony A7rII\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/phillipreeve.net\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Review: Sigma 17mm 4.0 DG DN Contemporary\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/phillipreeve.net\/blog\/#website\",\"url\":\"https:\/\/phillipreeve.net\/blog\/\",\"name\":\"phillipreeve.net\",\"description\":\"Sony \u03b1 | Leica M | Nikon Z\/F New articles every week\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/phillipreeve.net\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/phillipreeve.net\/blog\/#\/schema\/person\/9b7aa081afe07a6cae2e7d1ea1b476d7\",\"name\":\"BastianK\",\"description\":\"My name is Bastian and I am your expert here when it comes to ultra wide angle lenses, super fast portrait lenses (ranging from a 50mm f\/0.95 to a 200mm f\/1.8) and I also have reviewed way too many 35mm lenses. Don't ask me anything about macro or wildlife shooting though.\",\"sameAs\":[\"https:\/\/www.flickr.com\/bastian_k\",\"https:\/\/www.facebook.com\/bastian.kratzke\",\"https:\/\/www.instagram.com\/bastiankratzke\",\"https:\/\/www.linkedin.com\/in\/bastian-kratzke-450636164\/\"],\"url\":\"https:\/\/phillipreeve.net\/blog\/author\/bastiank\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Review: Sigma 17mm 4.0 DG DN Contemporary - phillipreeve.net","description":"The Sigma 17mm 4.0 DG DN Contemporary is a compact ultra wide angle lens with AF and an all metal casing, but can it compete with","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/","og_locale":"en_US","og_type":"article","og_title":"Review: Sigma 17mm 4.0 DG DN Contemporary - phillipreeve.net","og_description":"The Sigma 17mm 4.0 DG DN Contemporary is a compact ultra wide angle lens with AF and an all metal casing, but can it compete with","og_url":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/","og_site_name":"phillipreeve.net","article_author":"https:\/\/www.facebook.com\/bastian.kratzke","article_published_time":"2026-02-21T21:17:16+00:00","article_modified_time":"2026-03-23T11:18:32+00:00","og_image":[{"width":1200,"height":800,"url":"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2_FB.jpg","type":"image\/jpeg"}],"author":"BastianK","twitter_misc":{"Written by":"BastianK","Est. reading time":"26 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/","url":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/","name":"Review: Sigma 17mm 4.0 DG DN Contemporary - phillipreeve.net","isPartOf":{"@id":"https:\/\/phillipreeve.net\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#primaryimage"},"image":{"@id":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#primaryimage"},"thumbnailUrl":"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg","datePublished":"2026-02-21T21:17:16+00:00","dateModified":"2026-03-23T11:18:32+00:00","author":{"@id":"https:\/\/phillipreeve.net\/blog\/#\/schema\/person\/9b7aa081afe07a6cae2e7d1ea1b476d7"},"description":"The Sigma 17mm 4.0 DG DN Contemporary is a compact ultra wide angle lens with AF and an all metal casing, but can it compete with","breadcrumb":{"@id":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#primaryimage","url":"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg","contentUrl":"https:\/\/phillipreeve.net\/blog\/wp-content\/uploads\/2025\/12\/Sigma_17mm_4.0_DG_DN_C_Title_R2.jpg","width":800,"height":533,"caption":"Sigma 17mm 4.0 DG DN C on Sony A7rII"},{"@type":"BreadcrumbList","@id":"https:\/\/phillipreeve.net\/blog\/review-sigma-17mm-4-0-dg-dn-contemporary\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/phillipreeve.net\/blog\/"},{"@type":"ListItem","position":2,"name":"Review: Sigma 17mm 4.0 DG DN Contemporary"}]},{"@type":"WebSite","@id":"https:\/\/phillipreeve.net\/blog\/#website","url":"https:\/\/phillipreeve.net\/blog\/","name":"phillipreeve.net","description":"Sony \u03b1 | Leica M | Nikon Z\/F New articles every week","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/phillipreeve.net\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/phillipreeve.net\/blog\/#\/schema\/person\/9b7aa081afe07a6cae2e7d1ea1b476d7","name":"BastianK","description":"My name is Bastian and I am your expert here when it comes to ultra wide angle lenses, super fast portrait lenses (ranging from a 50mm f\/0.95 to a 200mm f\/1.8) and I also have reviewed way too many 35mm lenses. Don't ask me anything about macro or wildlife shooting though.","sameAs":["https:\/\/www.flickr.com\/bastian_k","https:\/\/www.facebook.com\/bastian.kratzke","https:\/\/www.instagram.com\/bastiankratzke","https:\/\/www.linkedin.com\/in\/bastian-kratzke-450636164\/"],"url":"https:\/\/phillipreeve.net\/blog\/author\/bastiank\/"}]}},"_links":{"self":[{"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/posts\/81205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/users\/4708"}],"replies":[{"embeddable":true,"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/comments?post=81205"}],"version-history":[{"count":21,"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/posts\/81205\/revisions"}],"predecessor-version":[{"id":85347,"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/posts\/81205\/revisions\/85347"}],"wp:attachment":[{"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/media?parent=81205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/categories?post=81205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phillipreeve.net\/blog\/wp-json\/wp\/v2\/tags?post=81205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}