Bitter, bitter, bitter. Works well on the F100 too. Also very useful for groups of people inside. This lens burnt in my car but was promptly rebought as I can't live without it. Now I wish I had shelled for a 1.4 or 1.2, although the optical quality is awesome and better than the 1.4.
Main drawback is the rotating front lens.
Haven't had time to use it much though. Strangely, although it is an EX lens, it does NOT allow manual refocusing in AF Single Shot mode on the F100. It is very small and lightweight given the aperture. It has a very nice automatic sunshade. Just got it for Jenny's F801s and haven't had much time to try it yet.