A fantastic view which replaced my old Canon EFS 10-22mm. Robust and excellent craftsmanship (the Canon almost cheap next door), the sharpness is simply outstanding at full aperture to f / 2.8 which allows for background blur, imperceptible with the Canon because of its low f / 4 aperture (prohibitive on an APS-C sensor). The opening of this goal allows him to make the "street photography" which makes it much more versatile. The MAP is fast and accurate, its only fault is its greater sensitivity to flare than the Canon and more pronounced purple fringing (it nevertheless corrected very easily to development). At less than 500, it is more a case for better UGA for APS-C market.