Saturday, April 24, 2010

3D technology

A 3-D ("three-dimensional") film or S3D ("stereoscopic 3D") film[1] is a motion picture that enhances the illusion of depth perception. Derived from stereoscopic photography, a special motion picture camera is used to record the images as seen from two perspectives (or computer-generated imagery generates the two perspectives), and special projection hardware and/or eyewear are used to provide the illusion of depth when viewing the film. 3-D films are not limited to feature film theatrical releases; television broadcasts and direct-to-video films have also incorporated similar methods, primarily for marketing purposes.

3-D films have existed in some form since 1890, but until 2010 had been largely relegated to a niche in the motion picture industry because of the costly hardware and processes required to produce and display a 3-D film, and the lack of a standardized format for all segments of the entertainment business. Nonetheless, 3-D films were prominently featured in the 1950s in American cinema, and later experienced a worldwide resurgence in the 1980s and 90s driven by IMAX high-end theaters and Disney themed-venues. 3-D films became more and more successful throughout 2000-09, culminating in the unprecedented success of 3-D presentations of Avatar in December 2009.