发明名称 Camera with automatic focus adjustment device
摘要 A camera having a zoom lens with a focusing range changeover device for selectively permitting photography in either one of the ordinary zoom and macro-zoom modes. An automatic focus adjustment is effected by measuring a distance from the camera to an object to be photographed through an optical system outside the zoom lens. When the camera is switched by the changeover device from the ordinary zoom mode to the macro-zoom mode, the automatic focus adjustment device is excluded automatically, or the film winding and shutter cocking mechanism are caused to be simultaneously inoperative. Upon movement of a knob from the autofocusing position, the mechanism is caused to be operative with manual focusing to thereby avoid reduction of image sharpness due to the parallax error which is greatly increased in macro-photography.
申请公布号 US4191460(A) 申请公布日期 1980.03.04
申请号 US19780962884 申请日期 1978.11.22
申请人 CANON K K 发明人 FUJIKI, MAKOTO
分类号 G03B13/36;G02B7/28;(IPC1-7):G03B3/10 主分类号 G03B13/36
代理机构 代理人
主权项
地址