I'm looking to purchase an UWA lens for my 7d. I'm pretty torn between the Canon 10-22, the Tokina 11-16.
The 10-22 is obviously wider, I also read that it puts out a little better IQ. Also the canon USM is probably a bit snappier. However, does anyone who shoots this lens find the variable aperture causing problems in everyday shooting? My fear is that i'll be shooting on the fly and get screwed over shooting at f/4.5. Obviously at that focal length DOF isn't really a concern but quick shutter speeds are important to me as a photojournalist.
11-16 is great because of the f/2.8 but i'm afraid the zoom range is too limited. Does anyone who shoots this lens find that range presents issues? My fear is that it is more of a specialty lens and I wont feel comfortable leaving it on the camera for long periods of time, while the range of 10-22 gives me a lot more options. Also I've been less than in love with the AF performance of non-canon lenses.