20.20 Megapixels Canon EF 35mm size sensor Updates: 02/01/2016:Downsized pre-production gallery images posted In the run-up to the 2012 London Olympics, Canon debuted their latest professional DSLR, the 1D X. Now, here we are on the eve of another summer Olympics, and Canon once again is pulling out the stops for its massively powerful, top-of-the-line EOS camera, the aptly-named Canon 1D X Mark II.