I just take a thousand pictures with this lens on a EOS-500D. I am delighted to its image quality. The images are very clear. There is no evidence of distortion within the look. The image stabilizer and autofocus work very well. You should know that this a fairly heavy object but to have this quality and flexibility that's a minimum. My only regret is its limited opening. the goal becomes quite dark quickly need for low light photography, but I think for many it's just a detail.