Built-in flash camera

Details Built-in flash camera Built-in flash camera

1997-09-16

1998-05-12

Malley, Daniel P.

Photography

Flash system responsive to focal length or distance

G03B 708

Patent

active

057520933

ABSTRACT:
An active type focusing part, including a projector and a light acceptor, is capable of measuring a reflectance of the main subject. When a distance measured by the focusing part is smaller than a predetermined distance, the reflectance is measured. A strobe light control part controls a strobe light in accordance with the measured distance, the measured reflectance, and a brightness measured by a photometry part. The strobe light control part decreases an exposure of the strobe light as the measured reflectance increases, so that the exposure of the strobe light is set appropriately.

REFERENCES:
patent: 4941009 (1990-07-01), Yoshida
patent: 5214467 (1993-05-01), Yoshida et al.
patent: 5255047 (1993-10-01), Ishimaru et al.
patent: 5440369 (1995-08-01), Tabata et al.

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