Reviews claim the 5D Mark IV and the 5D Mark III look alike, to me the ergonomics on the is more enchanting and that is because of the addition of the WiFi.
Accessory Review: Phottix BG- 5D III Battery Grip for Canon 5D Mark III. May 25, Magic Lantern enables Canon 5D Mark III Raw video.
Even with my Sigma (which gives my 5DII bodies absolute fits) is 100% accurate with no jitter on the . Center AF point and all peripheral AF points. Multiple Exposure and High Dynamic Range. Click here for additional information. Much quieter silent mode. If you read the image quality 5DIII on that page, you can skip down to the emboldened 5DIII improved" words. The "Manual NR in DPP" and "NR In-Camera" results appear the same to me - the process of adding noise reduction during post processing does not appear to be disadvantaged.