发明名称 EXTERNAL FINDER TYPE AUTO-FOCUS CAMERA, CLOSE-UP ADAPTER, AND CLOSE-UP EQUIPMENT
摘要 PURPOSE:To easily and properly perform close-up photographing by receiving a signal which indicates the size of an object and selecting a lens focal length corresponding to this signal from a storage means to perform the zoom control. CONSTITUTION:Correspondence relations between document sizes and lens focal lengths suitable for them are preliminarily stored in an EEPROM 16a of a CPU 16. When the CPU 16 in a camera detects that a switch 5 switched in accordance with the size of a document is set to the position of A3 size and contacts 6-a and 6-b and terminals 12-a and 12-b are connected, focal length information corresponding to the document size signal is selected from the EEPROM 16a to control driving of a motor M2, and a photographic lens 11 is zoomed. Thus, close-up photographing is easily and properly performed.
申请公布号 JPH02304540(A) 申请公布日期 1990.12.18
申请号 JP19890126447 申请日期 1989.05.19
申请人 CANON INC 发明人 MAMIYA TOSHIHARU
分类号 G03B13/36;G02B7/28;G03B17/56 主分类号 G03B13/36
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