Built-in flash camera

Details Built-in flash camera Built-in flash camera

1997-11-04

1998-06-09

Malley, Daniel P.

Photography

With object illumination for exposure

Having exposure synchronizer

G03B 1336

Patent

active

057650578

ABSTRACT:
A built-in flash camera includes a strobe which is flashed regularly, a photometry part for measuring a brightness within a shot visual field and an automatic exposure mechanism. An exposure of strobe light is decreased gradually from a standard exposure in accordance with the brightness measured by the photometry part and the object distance measured by the focusing part. The strobe is prohibited from flashing when the measured object distance is longer than a predetermined distance D3 and the measured external light brightness is higher than a predetermined brightness B2, which is enough to obtain a standard light exposure required for photographing. As a result, the optimum exposure can be obtained in accordance with the object distance and the external light brightness, and the electricity can be saved.

REFERENCES:
patent: 4941009 (1990-07-01), Yoshida
patent: 5255047 (1993-10-01), Ishimaru et al.

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