After some of my comments to others, I'm leaving myself open here. Does it work or not? One of about 30 images of a Spaniel jumping into a pond after a stick. He did it again and again on demand. EOS 40D with 70/300 EOS IS lens at 300mm. (480) Is on. Servo autofocus, full speed drive, ISO 400 and auto exposure - aperture priority @ f8. So about 1/800 sec.
Not sure it's sharp enough anywhere, so let me know.
Pets and captive animals