Photos: The technology behind 3D movies

The Pace Fusion 3D digital camera, used by director James Cameron for his movie Avatar to show in 2009, has two lenses side by side; the dual signals from the camera are sent by cable to a remote storage system. The camera's lenses can be positioned a variable distance apart for different shooting circumstances. These cameras have also been used to shoot National Basketball Association games for live broadcast.

Photo by Pace