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Favorite M mount lens for Architectural work ... ???

  
 
Surfnsun
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p.2 #1 · Favorite M mount lens for Architectural work ... ???


What are people’s opinions on the Leica Tri-Elmar-M 16–18–21mm f/4 ASPH? It seems like an excellent and interesting choice.


Feb 08, 2026 at 01:16 PM
bwcolor
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p.2 #2 · Favorite M mount lens for Architectural work ... ???


This is with the ZEISS C Biogon T* 21mm f/4.5 ZM. I traded this lens in while at MAP camera in Tokyo for a Leica 75mm APO and purchased a Leica 21mm SEM when I returned to the U.S. The SEM is a nicer looking lens, but the ZM doesn’t really give anything up vs the Leica. This is a high contrast/micro-contrast lens with very low distortion.

B&W Korea 2024 -69 by gary, on Flickr



Feb 08, 2026 at 01:37 PM
Andrew CD
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p.2 #3 · Favorite M mount lens for Architectural work ... ???


bwcolor wrote:

This is with the ZEISS C Biogon T* 21mm f/4.5 ZM. I traded this lens in while at MAP camera in Tokyo for a Leica 75mm APO and purchased a Leica 21mm SEM when I returned to the U.S. The SEM is a nicer looking lens, but the ZM doesn’t really give anything up vs the Leica. This is a high contrast/micro-contrast lens with very low distortion.

https://live.staticflickr.com/65535/53916355402_2e0f3a8ce6_k.jpgB&W Korea 2024 -69 by gary, on Flickr


Great photo!

I too have been really impressed by the ZM 21/4.5. I’m pretty sure that I recall seeing an assertion that it has the lowest distortion of any 21mm lens (don’t remember where, sorry). At any rate, I’m confident that it’s true to say that it’s ideal for architectural work. Moreover, it appears to work fine on the M11 (no colour smearing), unlike on earlier digital Ms (not sure about the M10R).



Feb 08, 2026 at 04:52 PM
Andrew CD
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p.2 #4 · Favorite M mount lens for Architectural work ... ???


Here are a couple of snaps. Nothing special, just small illustrations of why I like the ZM 4.5/21. The first has highlights reduced and shadows boosted (due to the light behind the spire) but nothing else changed, the second is unedited (other than whatever LR does by default). The lens is coded as the 16mm part of the Tri-Elmar (with the exif being updated to show the actual lens).

Edit to add: the first one was converted to B&W, of course (using LR’s B&W button).




  LEICA M11    Zeiss C Biogon T* 4.5/21 ZM lens    21mm    f/6.8    1/640s    64 ISO    0.0 EV  






  LEICA M11    Zeiss C Biogon T* 4.5/21 ZM lens    21mm    f/5.6    1/100s    64 ISO    -0.3 EV  




Feb 12, 2026 at 08:16 AM
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