Dave Dugdale’s 5D Mark III vs Nikon D800 Comparison May 23, 2012 by Caleb Pike — I STILL haven’t had a chance to mess around with the Canon 5D Mark III yet, but my good friend Dave Dugdale has done a great comparison between the 5D and the Nikon D800. Check it out below. The 5D Mark III has been in and out of stock but it looks like Amazon has them in stock for now. Canon 5D Mark III Recent Posts 7 Camera Tips for the Sony a6500 $33 Follow Focus Unit? Custom Monitor Mount Using GoPro Parts! 4K Vlogging Setup $600-700 4 Flexible LED Lights Under $200!