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Basic Principles
Placing objects in a 3D space
In 3D two images are projected onto the display. By wearing a special pair of glasses the two images are split so that each eye only sees one of the two images. When comparing the left and right eye images, every object in the scene is horizontally displaced by a small amount. The brain assumes these two displaced objects are actually one object, and tries to fuse them together. The only way it can do this is to assume the object is either in front or behind the screen plane. The direction and amount of displacement defines where each object is in the 3D space.

The 3D Camera Rig
A few different ideas have been devised for shooting 3D material over the years, including some interesting cameras using arrangements of lenses and prisms to make a more portable, easy to use, single bodied camera. However, to date, the most effective way of shooting 3D material in a professional environment is the dual camera 3D camera rig. There are several configurations of 3D camera rig, each with advantages and disadvantages.

3D Television & Film
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Depth Cues
The eight depth cues
Humans have eight depth cues that are used by the brain to estimate the relative distance of the objects in every scene we look at. These are listed below. The first five have been used by artists, illustrators and designers for hundreds of years to simulate a 3D scene on paintings and drawings. The sixth cue is used in film and video to portray depth in moving objects. However it is the last two cues that provide the most powerful depth cues our brains use to estimate depth.

Rig configurations
The parallel rig The opposing rig The mirror rig The most compact dual camera 3D rig is The opposing rig places the cameras in the parallel rig. This places the two a position where they are both pointing cameras next to each towards each other. A pair of mirrors other. Parallel rigs placed between the camera reflects the images for left