The 43mm would be lovely for architecture. Mamiya's data say it has virtually no distortion, and my empirical results show that to be the case. If I could shift it to the whole image circle, I'd get 20mm, which on a GFX sensor is plenty of shift for a lot of architecture work.Thanks, very informative. The point about the M7 lenses though is that they are not thaaat cheap, one could as well use a good analogue era lens (eg Grandagon); do you find them especially sharp or comparable to modern tech cam lenses? They are compact, I guess.
Very curious to see whether the 43 can be fixed. Incidentally this could be a killer architectural lens
For my situations these converted Mamiya 6/7 have a few things going for them:
- Compact, light and reasonable flange focal length is a big plus. I have to carry all this stuff over hill and dale, and I'm not getting younger or stronger.
- I really like the design and ergonomics of the the Mamiya G and N lenses. I always enjoyed my Olympus OM lenses because they had the aperture on the front, and Mamiya made the same design choice. They fit well to my hand.
- They are not "cheap", but they also are not in the same price league as modern Rodenstock technical camera lenses. This is equipment for work, but I'm not a commercial photographer who can write it off. It all has to fit within relatively small research grant budgets.
- I use a GFX 50R as the back on digital view cameras. It's an excellent combination for my purposes, but it does knock out of contention most of the under 60mm symmetrical or near-symmetrical lenses. The widest near-symmetrical analogue lens I tried (years ago) was the APO-Grandagon 55mm f/4.5. It was an awkward mount on my Toyo VX23D, and I didn't want to deal with the strong lens cast.
- Small, light and more affordable wouldn't matter if they didn't have the optical chops. These Mamiya 6 and 7 lenses are among the very best of over 100 lens, native and adapted, that I've used on three different mirrorless platforms. Best here being a function of sharpness, contrast, evenness of image quality across the shifted frame, distortion, lens aberrations, etc. That includes the native GF lenses I've used on my 50R. For my purposes, the Mamiya 6 and 7 lenses I'm using exceed my expectations. The only one that isn't quite in that league is the N 210mm f/8 (not a bad lens, but not as phenomenal as its siblings).
- One last thought on why I like these is the ability to use them on different platforms. I mostly work with digital view cameras, but I do sometimes just like to have a camera with me. Until I picked up the N 65mm and N 43mm lenses, I didn't go out with my camera anymore, which is a bit sad. This is a camera and lens that I want to take with me. It makes me want to go out and create images. It's just work if that feeling isn't there too!