The main thing different about the T-50 is it's a piece of junk . No offense if someone has one of these clunkers, but wow, is that a bad camera. Ugly AND noisy. At least it's cheap. I suspect that you would not have full aperture selection on them w/ non FD lenses.
Thanks Yeeski, that's the sort of knowledge I was looking for. I understand the pins on the back of the R lenses can sometimes foul the mirror box area, but I was hoping that wouldn't be an issue. I'll probably buy a cheap AE-1. The last FTb I owned was a super camera w/ a very high build quality (no plastic in those babies, it's all solid metal), but the low magnification viewfinder was not suited to eyeglass wearers.