F mount to EOS doesnt require it.
Its FD to EOS that requires and why i stayed away from FD mount lens.
Went window shopping today in Shanghai, and found a counter in a large photo shopping heaven, and saw a lot of lens-body adapters. Didn't bother asking since I only use Nikkors, but looks like you can match just about any lens to any body. Ok, maybe I'm exaggerating, I doubt you can match a Leica rangefinder lens to a F mount.