As I said before, I love this lens. I am trying to train myself to go out without the tri-pod and hold it freehand. Not an easy thing to do. I have been finally forced to learn, and use a focusing technique that my camera has, and it has been working a bit better than what I had been using previously.Nice photo Herb. It's very sharp, especially for being shot at 500mm. This lens of yours is looking better and better. Also, this bird looks like it can run pretty fast. I wonder if they're runners.