Use of M lenses on Fuji GFX 50s

vignetting will be very likely with each m lens, most lenses seem to vignet even on the A7r cameras. due to sensor design

the 75mm summilux is said to cover the gfx sensor when stopped down

and


https://blog.kasson.com/the-last-word/leica-902-summicron-m-asph-on-fuji-gfx-50s/

https://www.getdpi.com/forum/fuji/65141-fuji-gfx-50s-vignetting-leica-m-lenses.html

If you remount the old Hektor 135/4.5 in a new, wider focusing helicoid, it will cover the sensor well.

It is the narrow M mount that is more of a problem.

rga said:

My apologies if this has already been asked, but I would like to use my M-135/f3.4 ASPH and my 75/f2 ASPH on the GFX 50s. Does the image circle of these lenses cover the entire sensor. I believe lenses with longer focal lengths have larger image circles, but don't know if these lenses can be used without vignetting.
Thanks very much for your help,
Bob

Click to expand...

Satrycon said:

and


https://blog.kasson.com/the-last-word/leica-902-summicron-m-asph-on-fuji-gfx-50s/

https://www.getdpi.com/forum/fuji/65141-fuji-gfx-50s-vignetting-leica-m-lenses.html

Click to expand...

Thanks so much for the links. Very thorough and informative.
From what I see, with the Leica M 135/3.4 ASPH, the vignetting is minor and looks like it can be corrected with C1 LCC. I now understand if even processed with LCC, the edges may not be as sharp as the lens was not really built for larger than 35mm format, but seems acceptable for me.
Thanks again,
Bob