This lens is starting to feel a little old when it has the first-generation Image Stabilization from Canon and it means it does not work right with the camera on a tripod. Otherwise, this is a very nice and sharp lens for my Canon EOS 1D Mark III. On my previous camera, a Canon EOS 20D, so did not feel the sharpness as good for some reason. Anyway, it's a rusk term good telephoto zoom lens. However, the feeling that a successor from Canon for this should come soon as it feels a bit old.