citizen99
Well-known
Here's a test shot showing the vignetting of the Industar-69 on full-frame 135. (The off-centering of the circle of coverage is just the way that the processing shop scanned the negative.)Out of curiosity, I once investigated the Industar-69 (temporarily adjusting the focus helicoid to suit the different lens mounting face - to - film distance of the full-frame FED 2). It doesn't cover the full 135 frame, it vignettes severely in the corners. Cropping off the vignetted area, you're no better off for angle of view than that given by a normal f=35mm lens, and on smaller film area. It's why they're comparatively cheap.
