The build quality of the lens is excellent. It features the crinkle style finish typical for Sigma EX lenses, both zoom and focus ring are damped, the latter a little stiff, though.

BIG FAT YES! Good lens, Good value for money, Very nice quality pictures. Nothing to complain about. Who not happy just buy better, pay 700,1000,1500 pound and more for lenses. If money is a problem so just enjoy what you got. 100% RECOMEND this lens.

When people ask for recommendations on a super-wide-angle lens, they're often trying to decide between the Tokina 11-16 f/2.8 and the Sigma 10-20mm f/3.5. I tested these two lenses side by side last year and decided on the Sigma 10-20mm for several reasons: 1. Extra range 2.