Rhetorical question. Actually, if you read the information carefully, it’s pretty clear that the 1D X is more or less a 1D MkIV (16 megapixels,1.3X frame factor) with the sensor area increased to full frame. The pixels are actually larger than the MkIV so for any given telephoto lens, the true resolution of a sports/news/wildlife . . . → Read More: Does Canon EOS-1D X point the way?