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4 October 1983 A New Anamorphic Lens Design For Motion Picture Special Effects
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Proceedings Volume 0391, Optics in Entertainment; (1983) https://doi.org/10.1117/12.935076
Event: 1983 Los Angeles Technical Symposium, 1983, Los Angeles, United States
Abstract
Due to increased audience sophistication, it is desirable to continually pursue better im-age quality in the motion picture process. This is especially true in the area of special effects because of the many duplicating stages. At Lucasfilm Ltd. custom anamorphic lenses with very high resolutions have been used for this purpose with great success. Two of these custom lenses are used during the film reproduction stages in our optical printers. These lenses are at fixed conjugates, and do not require focus changes. However, a new lens has been constructed for photography of "matte paintings", which has a unique two lens focusing system. This lens system is microprocessor controlled in conjunction with a motion control camera system, and allows for a continuously variable object distance between 30 feet and about 8 inches. Additionally, this system is designed to maintain a constant anamorphic squeeze ratio and a very low geometrical distortion. The lens exhibits resolution of 150 1p/mm within the focusing range.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael Bolles, David Grafton, Jerry Jeffress, and Kris Brown "A New Anamorphic Lens Design For Motion Picture Special Effects", Proc. SPIE 0391, Optics in Entertainment, (4 October 1983); https://doi.org/10.1117/12.935076
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