Patent
1993-06-25
1995-08-15
Perkey, W. B.
354415, 354416, G03B 1336, G03B 1505
Patent
active
054424178
ABSTRACT:
An automatic flash amount control apparatus of camera in which a flash device and a photographic lens are set, comprises a focus detection device for performing focus detection with a photographic field being divided into a plurality of focus detection zones, a metering device for metering in a plurality of divided metering regions beams emitted from the flash device and then reflected by the photographic field, a control region selecting device for selecting a metering region preponderantly to contribute to a flash amount control, and a control device for adjusting a flash amount of the flash device, based on a metering value in the metering region selected by the control region selecting device, wherein the control region selecting device selects a region determined in accordance with an output of the focus detecting device if the photographic lens has a long focal length, but a region preliminarily determined if the photographic lens has a short focal length.
REFERENCES:
patent: 4760418 (1988-07-01), Ishizaki et al.
patent: 5111231 (1992-05-01), Tokunaga
patent: 5164759 (1992-11-01), Yasukawa
patent: 5172157 (1992-12-01), Takagi
patent: 5221941 (1993-06-01), Matsui et al.
patent: 5227836 (1993-07-01), Yasukawa et al.
patent: 5268730 (1993-12-01), Takagi
Nikon Corporation
Perkey W. B.
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