MountainRange
Newbie
Hello new to this site looks to be a place of great knowledge . My fed 3 seems to have a deteriorating prism mirror . The bottom, right corner through the viewfinder is black. No, I assume it’s still usable. It is quite annoying so my question is if I have a donor camera can I swap out a prism mechanism and be good to go ? Or will this require some recalibration and then some thing that I don’t think I’m up for ? Any input is greatly appreciated. Thanks, John.