A4K2: Stereo Capture rig for Canon A4000

This is a simple hand-held mount that we designed in 2014 for a pair of [Canon PowerShot A4000](http://aggregate.org/CACS/a4000.html) cameras to capture synchronized stereo images or video.

The camera mount is our own design, holding a pair of A4000 so that the stereo baseline approximates that of human vision. The cameras can be screwed-in via their tripod sockets, or can be secured using tie straps, but they actually clip in well enough for normal use. The grip (which was derived from [Thin