Originally Posted by
Scott Stephen
Exactly. What can one point to that is more appealing in the 17-40 vs the 17-55 2.8?
-You are not trying to "go full-frame", so the EF-S mount is not an issue.
-The aperature is smaller.
-The zoom length is shorter.
-The IQ is poorer.
Other than weather sealing, I can't think of anything, and frankly when it is raining I photograph indoor things.
It seems one would have to be one heck of an outdoor-oriented photographer (living in one heck of a rainy place) to value weatherproofing over all the other factors above.