The Sigma 55-200 f4/5.6 zoom lens is available for a number of different mounts, so rather than search thru all the forums individually, I wonder if I could elicit some general comments here from anyone who has used it on whatever camera. Whaddya think? It's certainly cheap enough, but what about performance? Does it focus as fast as your native camera's lenses? Sharpness, flare, etc.?
(Along those lines, I wonder if Steve might be coerced
into starting a forum dedicated to third-party dSLR lenses . . . :idea: )