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Programmed shutter and apparatus for preventing foreign matter on lens from being photographed in a lens shutter type of camera
Programmed shutter and apparatus for preventing foreign matter on lens from being photographed in a lens shutter type of camera
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机译:程序快门和用于防止在镜头快门式照相机中拍摄镜头上的异物的设备
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摘要
A programmed shutter and an apparatus are provided for preventing material, such as dust, on camera lenses from being photographed. The shutter can be used alone, or can be used togther with a pivotable neutral density filter which can be selectively positioned along the optical axis of a lens system having a zoom lens or at least two focal length positions.
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