The Canon 17-85 f/4.0-5.6 IS gets terrible reviews from most review websites. That is, when its competition is L series glass. It's supposedly a bad lens for action, because of its small max aperture. Anyway, it's become my go-to lens in just about every event. Of course, my Sigma 70-200 (another good lens) wins when telephoto is needed. However, for cage fights, basketball games, etc it just always makes its way onto my camera. Moral of this story, it may not be for everyone, but I love it. I've purchased other lenses, carried other lenses, tried other lenses, hooked other lenses up to my camera, cheated on this lens in every way imaginable..trying to find the perfect match...when it comes down to it, I often switch back to my trusty 17-85. I certainly cannot go on without posting a photo taken with this lens. Whelp, that's my review of a fine chunk of glass just under $500.