Thanks for the info. I was aware of the fact that zooming with this lens is limited. I wanted to see if anyone else out there knew that. I was thinking that there might be something wrong with my camera or possibly the lens. For what it is worth, Cookie Composites is going to add this info to their web site so that other buyers are aware of the zooming issue with the single element lens. I am looking forward to using the lens. I will be videoing our first NPSL meet this weekend.