If I didn't have a Mark 4 (Canon EOS-1D Mark IV capable of shooting up to 10 frames per second, Ed) or some other really fastcamera, I wouldn't have these pictures.
This is a very fastcamera in every respect (bar an occasional lag writing RAW files to memory) with a tack-sharp, super-fast lens, pleasingly fast autofocus, a great, bright screen, and rock-solid feeling controls that are right where your fingers need them to be.