Friday the 13th Part III was not merely photographed in 3-D; Paramount attempted to control the entire exhibition system surrounding the format. The studio leased two 3-Depix cameras from Marks Polarized Corporation while simultaneously investigating newer projection technology through Paramount executive Al Lo Presti. Because faulty theater lenses could ruin the illusion, Paramount turned to Gale Weaver of Sirius II Corp., who spent two weeks developing a prototype adaptable to almost any theater projector. Paramount then awarded Sirius II Corp. $1 million to manufacture the new lenses, intending to use them instead of Marks’ equipment.
Marks Polarized Corporation responded with a $25 million lawsuit accusing Paramount of monopolizing the marketing of 3-D exhibition materials and offering financial deductions to theaters that leased projection lenses directly from the studio. Marks sought an injunction that would have forced Paramount to alter its equipment strategy, but the injunction was denied. Paramount ultimately agreed to place an onscreen credit reading, “Filmed utilizing the Marks 3-Depix Converter,” turning a technical innovation dispute into a full-scale battle over who controlled the revival of theatrical 3-D. The conflict reflected the increasingly aggressive studio tactics of the period, when distributors were trying to dominate not just films but the machinery and revenue streams used to show them.
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