: Modern theaters mostly use RealD 3D , which employs circular polarization to allow head tilting without losing the 3D effect.
: Researchers at the MIT Media Lab have developed "Cinema 3D," a prototype screen using mirrors and lenses to deliver 3D content to every seat without glasses. Impact on the Moviegoing Experience cinema 3d
: Cameras capture a scene from two angles, mimicking the distance between human eyes. : Modern theaters mostly use RealD 3D ,