Preliminary Panasonic Twin-lens 3D Camera Recorder AG-3DA1.[1]

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Most cameras used for 3D film look much like the model in the image above. The key difference between these cameras and standard video cameras is the second lens, with the left and right lenses acting much like our left and right eyes. The camera obtains two images with slightly different viewpoints. If the images are projected in such a way that the image from the left lens only reaches the left eye and the image from the right lens only reaches the right eye, our brain interprets the images as having depth due to stereopsis. The different methods of 3D display are all based on this concept, and mostly differ in how the images are blocked from being seen by the wrong eye. Four main types of 3D display technologies: --Anaglyph --Lenticular Display --Passive Polarization --Active Shutter