{"id":1428,"date":"2015-11-06T19:25:38","date_gmt":"2015-11-06T18:25:38","guid":{"rendered":"http:\/\/phillipreeve.net\/blog\/?p=1428"},"modified":"2024-04-21T14:55:52","modified_gmt":"2024-04-21T13:55:52","slug":"the-sony-a7s-loosening-mount","status":"publish","type":"post","link":"https:\/\/phillipreeve.net\/blog\/the-sony-a7s-loosening-mount\/","title":{"rendered":"The Sony a7’s loosening mount"},"content":{"rendered":"

I am certainly not the first to report that the original Sony a7 has a problem with it’s mount which is loosening over time but so far I haven’t seen an illustration of how this problem can affect image quality.<\/p>\n

My Sony a7 arrived on Nov 20. 2013 so it is very close to two years old now. Until now I had noticed that the mount had gotten a little more play over time but it wasn’t\u00a0a real problem to me.<\/p>\n

But now a point is reached were it has become a real issue for me. If I mount a lens like my FE 4\/16-35 <\/a>and pit the camera on a tripod\u00a0I can see a gap between lens-mount and camera-mount! And the lens also has some rotational play.<\/p>\n

\"DSC09954\"<\/a><\/p>\n

 <\/p>\n

Does the problem\u00a0affect image quality?<\/h1>\n

Yes it does!<\/p>\n

<\/p>\n

Here are two images:
\nI took the left one with my tripod mounted a7 without any support.
\nFor the right image I put some pressure on the lens so that there is no longer any gap.<\/p>\n

In the center both images look the same:
\n<\/a><\/p>\n

\"zentrum\"<\/a>
Sony a7 | FE 4\/16-35 | 16mm | f\/4 | RAW LR default settings\u00a0| center<\/figcaption><\/figure>\n

If we look at the edges there is a notable disadvantage for the unsupported image:<\/p>\n

\"rand\"<\/a>
Sony a7 | FE 4\/16-35 | 16mm | f\/4 | RAW LR default settings\u00a0| edge<\/figcaption><\/figure>\n

And if we look at the corner there is a very obvious difference:<\/p>\n

\"ecke\"<\/a>
Sony a7 | FE 4\/16-35 | 16mm | f\/4 | RAW\u00a0LR default settings\u00a0| corner<\/figcaption><\/figure>\n

Solutions<\/h1>\n

Fotodiox was the first manufacturer to release an all metal-replacement “Tough” E-mount but that caused other problems. Because the machining wasn’t isn’t\u00a0precise and they are\u00a0thicker than the original mount they caused images blur and problems with many adapters which could no longer be mounted. So not really a solution.<\/p>\n

Since then Fotodiox has introduced a “Signature Edition<\/a>” (Afilliate Link) which seems to bet better machined<\/a>. \u00a0This could be a solution for my problem but I can’t really accept that I should pay that much money to fix a design flaw of my camera. So I will contact my national repair center and ask them to fix the problem by replacing the part with the more solid mount of the Sony a7s.<\/p>\n

Wish me luck!<\/p>\n

\n

This site contains affiliate links. If you make a purchase using any of the links marked as 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":"

I am certainly not the first to report that the original Sony a7 has a problem with it’s mount which is loosening over time but so far I haven’t seen an illustration of how this problem can affect image quality. My Sony a7 arrived on Nov 20. 2013 so it is very close to two … Continue reading The Sony a7’s loosening mount<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1428","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nThe Sony a7's loosening mount - phillipreeve.net<\/title>\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\/the-sony-a7s-loosening-mount\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Sony a7's loosening mount - phillipreeve.net\" \/>\n<meta property=\"og:description\" content=\"I am certainly not the first to report that the original Sony a7 has a problem with it’s mount which is loosening over time but so far I haven’t seen an illustration of how this problem can affect image quality. 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