LOLOL, film cameras, DSLR's, Canon focusing screens
Taken with old Nikkor 300mm likely stopped down to f8 or so. "A lucky shot" My old XT/350D
Taken with hacked/ modified/ fungus infected Canon 200mm/ f2.8, again on the old XT/350D. Had to remove the original mount to move the lens back towards the camera, and in so doing ruined the aperture linkage. If the lens was not a fungus victim, I would not have done so.
Bird is Nikon 180mm F2.8, again on my old Xt
One of my best shots ever. This is an old Sears 50mm 1.8 made by Mamiya, on the Xt. Even though it is M42 mount, made for a Mamiya 1000DTL, it had a skirt around the bottom of the lens which had to be filed off, laborously, to fit flush against other cameras / adapters.
Below, a crop of a shot, handheld, with a Tamron Adaptall SP 500mm mirror lens These are quite difficult to deal with because they are fixed aperture, and the 500mm on a crop camera makes them "big." also the background can give you unwanted effects with these lenses