Not terrible lens however not great. The lens is slow being a 4.5 at the wide end, image quality soft on edges and 55-200 is not a real useful zoom range its not sure if it wants to be a standard or telephoto zoom. "I've owned one" The positives are that its sharp in the middle,cheap in price and has USM. May I suggest a EF 75-300 USM or a EF 100-300 USM these lens are better all the way around in my opinion. If you are not looking to spend $$$ on professional L glass