Nice... Two Nikon D700s mounted together using a custom frame. Left camera is upside down, camera shutters electronically linked. Lenses physically racked together for simultaneous focus zoom. I'm pretty sure that's the zoom ring that's racked, the focus rings being nearer the front of the lenses. I suppose this could be set up with auto-focus on a single overlapping spot to make sure both lenses are matched.



Source: http://www.flickr.com/photos/beinder/4392274063/