This still may be the most common way to view 3D and is in fact the method that many 3D YouTube videos use to display 3D movies. Anaglyph viewing and in fact, all 3D, takes two images and tries to replicate the experience we all have when we look at objects with two eyes. Our brain combines the two views to create depth perception so that we know how far away an object is. 3D movies often exploit this by creating the illusion that certain objects are farther away than they really are and other objects appear to be moving out of the screen towards the viewer. 3D, like most new technology faced some challenges. Often the incorrect setup of the projectors caused viewers to suffer from headaches. The other challenge the red/cyan anaglyph format faced was the transition from black and white pictures to full-color movies because the two-color process distorted the original colors of the film. As black and white film gave way to color, anaglyph 3D faded away. However, experimentation continued for several decades, but high costs and the pressures of the Great Depression prevented studios from wholeheartedly adopting 3D. One notable success story during the Depression was “Audioscopiks.” Like its earlier predecessors, this film relied on the red/cyan anaglyph format. “Audioscopiks” received an Academy Award in 1936 for Best Short Subject, Novelty Category.
In the 1940’s, World War II took center stage and stereoscopic photography remained on a backburner throughout that decade. But over time new breakthroughs in technology brought 3D back to the theatres. In the 1950’s, television created new concerns for the studios. The television had movie studio executives worried that it would steal their audience, so they promoted 3D movies as a way to offer audiences something that they couldn’t see at home on television. Many predicted that 3-D technology would do for movies what the “talkies” had achieved years before. Although red/cyan anaglyph movies were still around, new developments lead to the Polaroid 3D system called “Natural Vision.” The new Polaroid system used linear polarization, two lenses filming light-waves passing in perpendicular planes to each other.