Flash photographing system

Details Flash photographing system Flash photographing system

1992-10-09

1994-05-10

Gellner, Michael L.

354432, 3541271, 354402, 354403, G03B 1503, G03B 708, G03B 300

Patent

active

053112431

ABSTRACT:
In a flash photographing system, measuring light is calculated by dividing a picture plane into a plurality of areas and adjusting a quantity of flash light on the basis of light measurement outputs obtained from the plurality of areas. The light measurement outputs are evaluated and weighted according to focusing states of the areas, and the weighting values are varied according to the kind of automatic focusing mode selected, so that a quantity of flash light can be controlled appositely to the automatic focusing mode selected.

REFERENCES:
patent: 4774401 (1988-09-01), Yamada et al.
patent: 4974007 (1990-11-01), Yoshida
patent: 5006879 (1991-04-01), Takagi et al.
patent: 5164759 (1992-11-01), Yasukawa
patent: 5168299 (1992-12-01), Taniguchi et al.
patent: 5168366 (1992-12-01), Yasukawa
patent: 5172157 (1992-12-01), Takagi

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