Topic summary
Optical printing

Extracted from the Wikipedia article Optical printer.
History
Development continued well into the 1980s, when the printers were now controlled using minicomputers. Prime examples of optical printing work include the matte work in Star Wars (1977), RoboCop (1987) and The Addams Family (1991). The film Who Framed Roger Rabbit (1988) involved over 1,000 shots that required optical printers, due to the film's combination of live action and cartoon elements. Some shots, such as those featuring Jessica Rabbit, involved as many as thirty layers of film.