We have already published that Canon 1DX mark II will be the primary camera for the Rio Olympics 2016 for the photojournalist and also the giant photo agency Gettyimages. Now Dpreview also compared Canon 1DX Mark II as well as Nikon D5 to showcase how far the cameras are worth to the photographers who will be the shooter in Olympics events.
Ultimately, both cameras are excellent tools for action photography. We’d certainly recommend the Canon EOS-1D X Mark II for landscape photography and 4K video, over the D5. If you need the world’s best AF system, and a camera that can shoot forever and literally see in the dark, then the D5 is the better option.