Test setup for 3D photography. The D300 and the D200 cameras side by side, one 180 degree turned. The minimal space between the 2 cameras is now 120mm. This results into an acceptable 3D stereo picture as macro setup. To synchronize the 2 cameras you need only 3 wires to put into the 10 pin Nikon connector. Meter and shutter signals are then parallel. The flash is connected to the slowest camera. You can push any of the 2 cameras to fire.
Here the first results of the 3D picture as crossview.