Title: Better sharpness, brightness and color saturation than Canon's 10-22
Product review: I just did some test shots comparing the Sigma 10-20mm and the Canon 10-22mm. The Sigma beat the Canon hands down on sharpness, brightness and color saturation without question. I've owned the Canon 10-22mm for almost a year and have never been satisfied with the softness of the images it produces. I've even sent it to the factory 3 times for adjustment. The tests I did today show the Sigma to be surprisingly the better lens hands down. It may be that I purchased a bad Canon lens, but after 3 trips to the factory for adjustment, I would think it would have been spotted. I'm constantly being told by reps how good the Canon 10-22mm is as it has the super UD glass and is supposed to be similar to L series quality. I've never seen this on my 40D and I'm now ecstatic to have found the Sigma to replace it. This is a great lens for a very nice price.
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