Quote (Land0n @ Dec 19 2010 06:12pm)
The 17-40 is definitely not sharper than the 24-70. I have the 17-40 and it is only as sharp, if not even less then the 18-55 IS. The 17-40 is better and color saturation and contrast, but is very similar to the 18-55 in sharpness.
Before anyone says I have a bad copy, google comparisons between the 17-40 and 18-55 IS and you'll find there are many similar reviews. This is not to say the 17-40 is a bad lens. There are a lot of other advantages when comparing to the 18-55IS, including full frame compatible, constant aperture, faster Af, and better build quality but sharpness definitely isn't one.
Exactly. The 17-40 is a superior lens in every way but sharpness to the 18-55 IS, which is a shame. When I saw the picture of the dog above, I thought 17-40 even though they were talking about the 24-70. Anyway. No I wouldn't say you have a bad copy, although I have seen images from owners of exceptionally good copies of the 17-40 that are very very sharp. So if anyone gets one of those, hang on to it.