SIMPLE:


The 17-40 f/4 L is a nice lens but made for FF users. If your'e going to put it on a cropped body (and sure you won't be going FF any time soon) then I think it's silly to have it on there. Sell it and get either the 17-55 IS (I have one and it's WICKED sharp!) or the 17-50 that Daniel suggested.


I feel like such a nice FF-capable lens mounted on a 1.6x cropped body is a waste.. there are better lenses out there for that. Now 17mm on a FF body, that's a different story!