[Paul Shields]

For me it's not worth upgrading my 50-200 to the SWD version. It's already a very sharp lens and the AF has improved somewhat on the E-3 compared to the E-1. I'd be a bit wary of getting a lens that focuses a few milliseconds faster but with the possibility of losing that pin sharpness. Maybe when it drops in price to the equivalent of the non-SWD 50-200mm I'll take another look - though of course by then it may be harder for me to shift my current 50-200mm...