GoPro has debuted its 3D Hero system, the smallest 3D camera available on the market today. This 5- x 2.5-inch device can shoot full 1080p HD video and stills.

Accompanied by a waterproof case, the Hero system is essentially mounted on top of another camera to create the two-lens system needed for shooting in 3D. With the case, video can be shot at depths of up to 180 feet...