Quote Originally Posted by HDNitehawk View Post
You can't use you're 17-85mm on your 5D II. So you are not sacrificing a lower focal range by getting a 24mm for your 5D II. A 17mm is equivalent view to a 27mm on your 5D II. 24mm on your 5D II is actually wider than your 40D with the 17-85mm wide open.

24mm is an excellent focal length for landscape.
Sorry, I was referring to switching with the new lens I get. I don't plan to use the 17-85 after I upgrade. On the focal range loss, I was referring to going with a 24 at the bottom end vs the 17 on a 17-40.