11/15/2020: “Alternatives” and “Conclusion” and “Notes” sections has been updated in light of new releases, and a few more sample images have been added.
The Pentax 31mm f1.8 Limited is a fast moderate wide angle lens released in 2001. It’s designated as one of Pentax’s “Limited” series, denoting its high status within the Pentax catalogue. Since its release, the 31 Ltd has been beloved, especially within the Pentax community. I picked up my first copy in pursuit of a fast, decently priced alternative to the Sony RX1. Sony hasn’t provided shooters with a native fast 35mm f1.8 or f2 option. The 31 Ltd was a highly praised lens upon release, but optics have come along way recently, and it’s getting long in the tooth. Let’s see how it holds up 17 years after it’s release, and what type of images we can expect.
The 31mm focal length is an oddity, being near but noticeably different from the more conventional 28mm or 35mm focal lengths. The 31 ltd functions as versatile jack-of-trades lens with its 31 FL. The lens is still in production by Pentax/Ricoh, coming in either silver or black.
To view larger versions of the photos in this review, follow this link to my Pentax 31 ltd album on flickr:
We summarize our experience with all the native E-mount and a few (manual) legacy lenses in the 9-20mm bracket to give you a compact and independent resource for choosing the right super- to ultra-wide-angle lens for your Sony A7 cameras. In this summary we also included some adapted lenses we think are worth mentioning.
We have no association with any lens manufacturer apart from occasionally loaning a lens for a review. Before any short introduction we tell you how long we have used a lens and if we have borrowed it from a manufacturer. But in most cases we have bought the lenses new from retail stores or on on the used market.
If we have left any question unanswered please leave a comment and we will do our best to answer it.
Last update: December 2021
If you purchase the lens through one of thee affiliate-links in this article we get a small compensation with no additional cost to you.
Laowa 5.6/9 FF-RL
Status: Sample loaned by the manufacturer reviewed by Bastian who replaced his Voigtlander 10mm 5.6 with this lens
super compact and the widest rectilinear lens available
contrast and resolution are surprisingly good from wide open
flare resistance slightly worse than the wide Voigtlander primes, very nice sunstars thanks to 5 straight aperture blades
complex distortion and high vignetting (profile for LR available)
Widest rectilinear lens available in a very compact package and with surprisingly good image quality
Back in 2008 the Sigma 50mm 1.4 EX was the biggest and most expensive 50mm f/1.4 lens with AF for DSLRs. Now, 12 years later, it looks reasonably sized compared to its modern competitors and can be found used for bargain prices.
But is it a lens still worth considering in 2020? Let us find out in this review!
Landscape astrophotography is something I have been doing for several years. Luckily over the past few years many lenses have been released that make this task easier than ever. So today we are going to have a look at all the available lenses for your Sony so you can choose the one that works best for your needs. Last update: December 2021
What is landscape astrophotography?
In landscape astrophotography you will usually try to have a combination of the starry sky (with Milky Way or Northern Lights) as well as some foreground (e.g. landscape) in your frame so we are mostly looking at ultra wide to normal lenses (for stitching) here.
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