I am building a custom imaging workstation that will use a D800 and D610 to image astronomical glass plates and the paper jackets in transmission and reflective modes respectively. I need to mount the D800 and D610 repeatably on custom mounting plates. I noticed there are registration pin holes in the bottom of both cameras in addition to the tripod mounting threaded hole. Does anyone have or know where to get a dimensioned drawing for the location and size of these registration holes so I can make my mounting plates to fit? Also, knowing the hole locations with respect to the optical axis would be useful.
The short answer is that the optical axis is engraved in white on the right side of your camera top adjacent to the lcd control panel. If you are interested in making registration pins based on the holes to the left and right of the 1/4in reinforced screw hole on the titanium base plate -just xerox the bottom of the camera But I would never use those unreinforced holes for registration purposes. Eventually the holes will wear out or break, depending on your use. The 1/4in screw hole is reinforced and should be used instead. In any case, the monorail idea is a good one, but if you simply want to use the d800 as a copy camera, locate an enlarger column that has a 1/4in mount -then use a laser alignment tool to level the camera optical axis to the illuminated light box surface where your glass plates are located. Good luck.
If I use the system zero plate, I just need to locate that on my stand, no drawing for that either. I called Nikon, the technical support person held the camera in his hand, said, yup there are some holes, I can't tell you where they are. I do have a request into Nikon for a CAD model of each camera. I'll have to wait to see what comes of this. I can measure off the camera or a xerox copy or scan, but I'd rather get the dimensions form the source. Thanks for the advice, though. Alan