The Canon EOS-1D Mark IV's viewfinder hasn't changed from the 1D Mark III. According to the company, the Canon 1D Mark IV's pentaprism viewfinder has a coverage of approximately 100% (which agrees ...

The Canon EOS-1D Mark III has a rather different user interface than did the 1D Mark II N, including some new arrangements on the LCD status displays. See the Viewfinder tab above for info on and ...