The D810 was the greatest still photo camera ever made until the release of the Canon 5DS-R. Even now, it’s a close call, and the D810 beats the Canon in some key areas, including dynamic range. Sure, there are medium format cameras with bigger sensors and more pixels, and Nikon’s own D4S is twice the price. But if I could only have one camera, I’d rather have the 5DS-R or the D810. The image quality is the best in the world, it has one of the best focusing systems ever made, it’s smaller than a D4S or a medium format camera, and you can connect hundreds of Nikon-compatible lenses to it. If you can afford it, this is the camera for you. Still, it’s not the camera that I would recommend to most people. You can get similar image quality from a used D800E (this camera’s predecessor), and that’s the right choice for everyone who doesn’t need the D810’s greatly improved focusing system. Most portrait photographers should buy a D610 and save the extra money for lenses and lighting; you won’t miss the extra megapixels. Some hard-core professionals will need specific features of the D4S, such as the weatherproofing or the gigabit Ethernet. But for wedding, wildlife, and sports photographers, or anyone who has the budget, the D810 is the greatest camera ever made. Here’s are several video comparisons with the D810: https://www.youtube.com/watch?v=JgT8ycxfwdk https://www.youtube.com/watch?v=FlGffGBz8uQ https://www.youtube.com/watch?v=E-GbuXU8YMQ https://www.youtube.com/watch?v=8Xrslc5zsPI https://www.youtube.com/watch?v=Gq3ISUHsfsQ For existing owners, here’s a hands-on video tutorial: https://www.youtube.com/watch?v=UGD8mJOmzUU