Canon EF-S 17-55mm f/2.8 IS USM review by hansdampf
10 March 2014
Summary: I highly recommend this lens in combination with an EOS 7D without hesitation. The autofocus is very fast focus and the focal length of the crop sensor is completely sufficient for most images. Since then I have bought it, I've shot several 1000s of pictures with it and all of them are keepers. My recommendation: Save a little longer for this lens instead of an EF-S 18-200 or even 18-135.
Summary: The 'L-class' APS-C Lens Feel confidence to know for sure that your pictures are the best The best wide zoom lens ever for APS-C. With a high price of course but there is a good reason. This is an L-class quality lens, it shares the L-series UD lens elements (L is for Luxury, Canon's top-of-the-line lenses). It’s not designated L because is not full-frame compatible. EF-S is designed only for ASP-C cameras. That said, the price is not so bad after all.