Thanks for the info, I went up to photographyreview.com, and like you said, nothing much one way or the other, but at least it gave me an idea of the class of lens. I then went a little deeper on the web, and found that people who use it, like it, some even comparing it to Nikkor. Im not sure what the minimum aperture is, but Im taking one of my bodies up to the store today to try it. So Ill get back to you on that one. Again thanks. Quinn