I have used the my DR-5 right-angle viewfinder on my D3X for a few years now with great success, especially for low angle shots. Reading the specifications on the DR-5 it says that it is compatible with the D800/810. However, I have found that the threaded ring on the D800/810 is clearly larger than the ring on the D3X. I called Nikon support to see if there is an adaptor required and they say it should mount without problem. Unless I am missing a piece of the puzzle, the DR-5 isn't made for the D800/810. Has anyone had success with this?
D3X, D800, 17-35, 28-70, Zeiss 55mm OTUS, 85mm Zeiss CF.2, 85mm PCE, 70-200 VRII, 105DC