This guy was far away but I had a 100-400 with a 1.4 extender on my camera. I had tried manually to focus on him and took a couple of shots. About 5 minutes later he was still there and began to exercise his wings. I turned the camera on him and quickly shot a couple of frames. Back at my laptop, the focus was not the best. I edit processed in Topaz to give it a slight painterly appearance. Came out ok!