Automatic light adjustment camera and exchangable lenses therefo

Details Automatic light adjustment camera and exchangable lenses therefo Automatic light adjustment camera and exchangable lenses therefo

1992-06-15

1993-07-27

Gellner, Michael L.

354403, 354432, 354416, G03B 1505

Patent

active

052314472

ABSTRACT:
An automatic light adjustment camera comprises a flash apparatus capable of performing preliminary flash emission and main flash emission; a photometric device for dividing the light beam emitted from the flash apparatus and reflected by a field into a plurality of photometric areas for photometry and outputting each photometric value; a light adjusting area determining device for determining the photometric areas which are allowed to contribute to light adjustment at the time of the main flash emission using the photometric values, photographing distances, and detection errors for the photographing distances at the time of preliminary flash emission; and a light adjusting device for performing light adjustment at the time of the main flash emission using the light adjusting areas determined by the light adjusting area determining device.

REFERENCES:
patent: 4809030 (1989-02-01), Takagi et al.
patent: 4905035 (1990-02-01), Takagi et al.
patent: 4965620 (1990-10-01), Takagi et al.
patent: 5164759 (1992-11-01), Yasukawa
patent: 5172157 (1992-12-01), Takagi

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