The 3-D Process
The film used a single strip 3-D process which involved two 2:35:1 format images being printed onto one 4:3 frame of film, stacked one over the other. Traditionally, this process is known as the "over and under" process. This camera system was named the Marks 3-Depix StereoSpace Converter (though the film posters heralded it as both "SuperVision" and "WonderVision"). In order to be projected in the Polarization 3-D process and viewed with clear glasses, the film required a 3-Depix Reverser to re-order the over and under images into separate projections. Tony Anthony himself was credited with designing a relatively low cost projection lens which made the film marketable for general release.
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“That which endures is not one or another association of living forms, but the process of which the cosmos is the product, and of which these are among the transitory expressions.”
—Thomas Henry Huxley (1825–95)