发明名称 Photometric apparatus
摘要 A photometric apparatus includes an exposure value calculator for calculating an exposure value based on light data from a photo sensor and an inputted photosensitivity; an exposure value difference calculator for calculating a difference between a calculated exposure value and a reference exposure value; a gamma characteristic provider, which provides a gamma characteristic concerning a relationship between the exposure value difference and a gradation value of digital data; a gradation calculator for calculating, based on the exposure value difference and the gamma characteristic, a gradation value of digital data in connection with an object having the calculated exposure value when the object is photographed at the reference exposure value; and an indicator for indicating the calculated gradation value of digital data in connection with the object.
申请公布号 US6900886(B2) 申请公布日期 2005.05.31
申请号 US20020128094 申请日期 2002.04.23
申请人 MINOLTA CO., LTD. 发明人 YUASA YOSHIO
分类号 G01J1/44;G01J1/42;G03B7/08;H04N5/225;H04N5/235;H04N9/04;H04N101/00;(IPC1-7):G01J1/42 主分类号 G01J1/44
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