|
I have the 17-55 F/2.8 IS and absolutely love it. I previously had the 24-105 F/4L and was never impressed with the quality as the pictures weren't that sharp if I shot wide open. I really don't think you are skimping on the quality of glass from the 24-70 if you go with the 17-55, it's one really impressive lens. And the IS on the lens makes a really large difference. I shoot a lot of low-light stuff and the lens has never failed me yet. Another thing to consider is the size of the 24-70 versus the 17-55, the 24-70 is a brick!
|