I'm currently using the EF-S 17-85 kit lens that came with my original 40D and just moved to the 7D. Its still a pretty good lens, has IS and USM.
I'm going to add the EF 24-105 and want to complement it on the wide end. I've read great things about the Tokina 11-16 but also that it's more like a prime and I wonder if I'm better off with the 12-24 or the 10-22 to avoid a lot of lens changing. Is the 11-16 too narrow for general "walking the streets and shooting buildings?"
I like to take architecture and landscape (yes, I know - its a crop body, but....its what I could afford). And, since most of this is outdoors, maybe having both lenses be f/4 is ok?
I've read so many threads and the result is a lot of confusion.
So - how much wide angle do I gain with that additional 2mm (10-22) or 1mm (11-16) vs the 12-24? Is the 11-16 really too short a range?
It also appears that the Tokina's may be better build quality than the Canon 10-22?