You get what you pay for....this lens is not even as good as the 18-55mm lens that comes with the Rebel Xti camera. I took over 100 pictures and 2 of them were usable. I tried it on every setting and speed I could find. And the image quality was still poor. In my opinion you are being foolishly optimistic if you expect to pay $260.00 for a 28-300 zoom lens and get high quality images. I will go back to Canon now.