Have you seen a 3D Film? It is really interesting and the images appear as seen in normal eyes in a Three dimensional view. Now 3D films, 3D TV etc are popular and we are on the verge of a 3D boom. Special kind of glasses are provided in movie theaters to watch 3D Films. The 3D imaging or 3D animation uses special technology to record the film and special kinds of glasses are necessary to view the film. If you remove these glasses and watch the same movie with naked eyes, the incredible 3D experience would vanish and you would land up viewing distorted/blurred pictures. The 3D effect is due to an illusion of the depth to the viewer. Let us see the trick behind the 3D technology.