7 out of 10 points and recommendedThe one I found in the end is pretty sharp, though never really crisp, but symmetrical. Love the feel of the focus and zoom rings. Love the easily adjustable AF/M switch. Includes hood and pouch. Great price compared to roughly equal Canon 10-22.main con is soft on edges when fully open and asymmetrical unsharpness and CA for many bad copies.
I've seen enough great results of this lens on the internet, but I've tried 2 copies so far, which all had an unsharp/stretched/bad CA blur on one side of the image. Different sides with each one.reviewed February 5th, 2010 (purchased for $565)
I've let them send the first one back to Sigma. I've read some reviewer sending the best of 5 to Sigma, and coming back as the worst of them, so I''m not really enjoying this whole experience.
Paying this much should give me something I should be really happy about. I'm not planning on settling for less, especially when knowing how good this one CAN be... :/
[edit:]I've received the 3rd one after 1.5 months of waiting while it was at Sigma repair center. This one's GREAT! I'm sooooo happy. Thank god I persisted...