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Why there is no a really great 40mm lens?

  
 
QuietOC
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p.6 #1 · p.6 #1 · Why there is no a really great 40mm lens?


zeitlos wrote:
Quick off-topic: Only Pentax can do better 40mm 2.8 => 52 grams. Covers Full Frame. Had it once, great lens.

https://www.ricoh-imaging.co.jp/english/products/lens/k/standard/smcpentax-da40/

However, since it demands auto focus you cannot (really) use it with a Sony.


I used that lens on E-mount. It doesn't cover full-frame well, but I had no problem focusing it. It is a simple unit focus lens with a direct manual helicoid. It is not too bad stopped down, but it is pretty poor overall compared to other lenses like the Canon EF 40mm F2.8 STM.



Dec 03, 2022 at 05:12 AM
zeitlos
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p.6 #2 · p.6 #2 · Why there is no a really great 40mm lens?


QuietOC wrote:
I used that lens on E-mount. It doesn't cover full-frame well, but I had no problem focusing it. It is a simple unit focus lens with a direct manual helicoid. It is not too bad stopped down, but it is pretty poor overall compared to other lenses like the Canon EF 40mm F2.8 STM.



Interesting. When used on a Pentax full frame camera (K-1), its fully usable as a full frame lens. A bit of vignetting.

I didnt know that it works with a Sony. incredibly light/small option then. It surely gets better when stopping down, however, I liked it for portraits wide open as well: https://www.flickr.com/groups/[email protected]/pool/
I suppose in those samples its mostly been in use on APS-C cameras. Would have to check the exifs.



Dec 03, 2022 at 06:10 AM
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