I shot a few frames with a Tokina 11-17mm f/2.8 from a Nikon user who I ran into one evening...we swapped lenses...he tried my brand-new 50 1.8-G and I tried the Tokina 11-17. I LIKED the heft and solidness of the Tokina, plus, to me, a no-to-too-wide-angle kinda' guy, it seemed very,very,very wiiiiiiide! Of course, the Tokina, and Tamron, and Sigma wide zooms in the 10-22,12-24,11-17,etc. range are all available for different camera systems--Canon EF,Nikon F,Pentax,Sony Alpha mounts.