Greetings again I've owned the Sigma 70-2002.8 HSM for nearly 5 months now, but never really put the AF speed to the test until last Sat. With my F90X, the AF was amazingly reliable and fast when photographing ballroom/latin dancing. The F90X focus region was the most limiting factor - the subject almost never coincides with the central region (the floor usually does though)! However, since the AF was so fast, focus-lock/recomposition delivered the results. Compared to the Nikkor, I found that the HSM is definitely faster for small incremental focus adjustments and I never had any hunting problems. If you try to go from one focus extreme to the other, the speed between the two lenses is about the same. I could never justify the cost of the Nikkor AF-S. For anyone else in the same position, I can strongly recommend the Sigma HSM over the plain vanilla Nikkor 80-200 f2.8 any day. (No flames please for not championing Nikon this time!) Regards Anthony [EMAIL PROTECTED]
