While this lens takes pretty good pictures, I can't endorse it's purchase. When I received the lens, it looked like it was in good condition so I installed it on my camera. I quickly realized that autofocus was not working properly. After testing different shots and different conditions, the autofocus would only move every so often, and the camera would not take pictures because the AF wasn't working. When AF DID work, it was very slow and sluggish. After awhile, it wouldn't work at all. I brought it to a local camera store, and they diagnosed it as a bad motor (all other lenses work on my camera, so it was not the camera).The lens worked fine with manual focus and I don't have any complaints about the picture quality.I'm not sure if the bad lens motor was due to Canon's QC or if was due to the infamous subpar packaging of lenses from Amazon. Either way, the lens was defective and was sent back.