littlome

Went through three of these (two of which were calibrated by Sigma) looking for a razor-sharp copy that a few lucky others claim to own. All three copies after calibration were about the same sharpness.

With post-processing, provides wonderfully wide and saturated prints. Although images seem soft on the screen while pixel-peeping, the lens is more than sharp enough to produce prints with very good detail. Corners at the widest settings on full frame tend to be on the soft side.

All in all, I am very happy with this lens. I'm able to get incredibly wide shots and position the camera in ways to get creative shots not possible with my other longer wide-angle lenses. I've gotten quite attached to this lens, it's a lot of fun to use.