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    TRON Ektachrome Continuous-Tone Transparencies Group of 13 (Walt Disney, 1982). TRON was one of the first major motion picture films to use computer-generated imagery (CGI) even though the film's associate producer and visual effects supervisor, Harrison Ellenshaw noted that, "It is my recollection that we didn't use the term CGI until right after TRON. I remember that term is included in the Cinefex article on the film." Presented in this lot are 13 Ektachrome continuous-tone transparencies from the ground-breaking film. To achieve the effect, actors and sets in TRON were initially photographed in black-and-white. This continuous-tone transparency is an enlarged frame of film from the original photography. Framed enlargements were placed over a light source and re-photographed through colored camera filters. The computers at the time could not do animation, so the frames had to be produced one by one. In some of the more complex sequences each frame could take up to six hours to produce. These 13 transparencies makeup one frame in the film and come from the personal collection of Harrison Ellenshaw. The transparencies measure 20" x 12". Normal production handling and wear. Overall Very Good condition.

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