A wide-angle, yes, but which one? (Part 2)

What we like:A very good quality-to-price ratio.Very good resolution for this kind of lens.Negligeable distortion - a pleasant surprise for a short focal lens.Pleasingly low vignetting.What we don’t like:Significant chromatic aberrations.A somewhat heavy lens.Not bad at all, but let’s see how the Tokina stacks up against some of its chief competitors, first on a Canon mount:The Tokina AT-X 11-16mm PRO DX Canon vs Canon EF-S 10-22mm f/3.5-4.5 USM vs Sigma 8-16mm F4.5-5.6 DC HSM Canon on a Canon EOS 7DTokina AT-X 11-16mm PRO DX CanonStrong pointsWeak pointsPriceSignificant chromatic aberrationsLow distortion Low vignetting Transmission Resolution Canon EF-S 10-22mm f/3.5-4.5 USMStrong pointsWeak pointsFew