I'd be curious to know if there's any noticeable difference in images made from the 50mm f/2 Ai and the early version of the 50mm f/1.8 Ais. I want to pick up a manual focus normal lens for my FE2 (having sold my old, unloved f/1.4) and am considering these two. From what I can tell they are very similar, at least as far as observable sharpness is concerned, but do they have a different "look" (e.g. in out-of-focus areas)? Is there any reason to choose one over the other? Thanks.