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Photographic apparatus or cinematographique for taking views is provided with a primary endpoint, and an optical element, complementary
Photographic apparatus or cinematographique for taking views is provided with a primary endpoint, and an optical element, complementary
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机译:用于拍照的摄影设备或电影摄影设备具有主要终点和互补的光学元件
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摘要
A camera includes a primary lens, a converter lens selectively usable to change the camera's effective focal length and an exposure control device which includes a photocell. The converter lens, movable into and out of the camera's optical path, has predetermined light loss and color contribution factors. A cover glass having approximately one-half the light loss factor and approximately the same color contribution factor as the converter lens is movable from a position affecting the light directed toward the photocell when the converter lens is in the camera's optical path to a position affecting light directed toward the primary lens when the converter lens is removed from the optical path.
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