Canon EOS 1Ds Mark III and the Canon EOS 1D Mark IV Removed from Canon Website.
Canon USA has removed the Canon EOS 1Ds Mark III and the Canon EOS 1D Mark IV from their website. Now the Canon EOS 1DX is the only flagship Camera. They both are capable of focusing at f/8. AF is unavailable on the EOS-1D X if the maximum aperture reported to the camera through the electronic lens mount is smaller than f/5.6. It was a plus point for birds and tele shooters who need 2X converter for some extra reach with their f/4 (max) lenses.