Both camera's have their good points although I suspect the FT3 meter might be a little off after 40 yrs. The good thing is that the FT3 uses silver oxide, not mercury batteries, a big plus in my book. Optically, the 50/2 is by far the better of the two lenses stop for stop but I'm sure you knew that. Too bad the 50/2 isn't converted to Ai unless you don't plan to use the meter. I'm surprised to learn the FT3 focuses easier, is it the ground glass/fresnel portion you refer to or the central focusing aid in K screen vs. the standard A screen on the F? Either camera would be a pleasure to use and the F is certainly a bit quieter in my experience.