Anybody who knows me knows that I’m not a professional sports photographer and that putting a 1D Mark IV in my hands would be about as useful as putting me behind the wheel of any car that’s won a NASCAR race in the last decade. Can I figure things on the exposure triangle? Sure. Much past that, things get iffy.

Fortunately, Canon puts samples in the hands of guys like Brad Mangin, who is a professional sports photographer. You can see his first hand use of the EOS 1D Mark IV with the 400 f/2.8 (on and off the 1.4x tele-converter) in the Detroit Lions vs San Francisco 49ers game here, complete with a RAW file downloadable from his server.