Quote Originally Posted by shutterdown View Post
I use them differently. I have the 7D, which the 17-55 is mounted on. I use it a lot, particularly for informal portraiture and people shots.

The 17-40 L is used primarily for landscapes with my FF camera. I rarely use it at f/4. I stop it down to f/8-f/11.

I would say that the EF-S lens gets more use.
Haha I see, so you rarely, if ever, use the 17-40 on your 7D then. Which lens would have your vote if you had to use the 7D exclusively? 17-55?