The reason I started this thread was because no one seems to be able to agree on whether or not there is a problem with the Jupiter-3. Considering it is a very fast lens, even for a 50mm, and there seems to be unanimous agreement sample variation can be wide with FSU equipment overall, I suppose that's why there's so much discord. I would also like to see a 1991 example, that sounds really late. My Jupiter-8-1 is from 1992, and on the Zorki-6 I tested it on, it works like a dream.