发明名称 BLITZGERAET
摘要 In a flash photography apparatus of the type determining an aperture for flash photography based on an integrated value of the reflected light quantity received from an object to be photographed as a result of pre-flashing, the quantity of light received is reduced when the integrated value thereof reaches a predetermined value. Then, the quantity of light received as a result of pre-flashing performed thereafter is integrated and the aperture is determined on the basis of the above integrated value and a signal indicating that the integrated value of the light quantity received has reached a predetermined value.
申请公布号 DE3347467(A1) 申请公布日期 1984.07.05
申请号 DE19833347467 申请日期 1983.12.29
申请人 CANON K.K. 发明人 KATAOKA,HIROYUKI
分类号 G03B7/16;G03B15/05 主分类号 G03B7/16
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