GoPro Hero3 Black Multi-Camera Timing

In the previous post, I explored the field-of-view of a GoPro Hero3 Black camera.  In this post, I explore the timing of two cameras, both paired with the same remote.  I set the cameras to 848x480 240Hz video, pointed them at a kitchen timer that has an LED blink once per second, and recorded.  Here are four images from each camera, composed together so you can see how the timing varies:



So, accurate to within 2 frames at 240 Hz - only about 8 milliseconds or so of difference.  Should be good enough for my purposes.  The bigger concern is the color shift apparent between them.  Note that the bottom image seems a little more saturated than the top.  Probably correctable, but annoying.

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