发明名称 EXPOSURE CONTROL DEVICE OF VARIABLE FOCUS CAMERA
摘要 PURPOSE:To attain AE exposure without storing extensive memory by shifting a photometric value on a table indicating the corresponding relation of photometric values to shutter seconds which is built in an exposure control device in accordance with the switching of a focal distance. CONSTITUTION:The table indicating the relation of the photometric zone AET to shutter seconds TAE is stored in a storage means 5. In this case, a photometric value on the table indicating the corresponding relation of the photometric values to the shutter seconds which is built in the exposure control device is shifted in accordance with the switching of the focal distance. For instance, AE exposure can be attained by a variable focus camera without storing extensive memory by shifting the contents of the table with five steps. Consequently, it is unnecessary to store uselessly many tables in the storage means even in the variable focus camera of which aperture stop value is changed and proper exposure can be attained in any lens conditions.
申请公布号 JPS61162032(A) 申请公布日期 1986.07.22
申请号 JP19850003643 申请日期 1985.01.11
申请人 KONISHIROKU PHOTO IND CO LTD 发明人 SUZUKI YOSHIJIRO;HOSHINO YASUSHI;MAKINO MASAMORI
分类号 G03B7/097;G03B3/04 主分类号 G03B7/097
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