TTL automatic flash control camera

Details TTL automatic flash control camera TTL automatic flash control camera

1991-06-28

1992-11-17

Adams, Russell E.

354132, 354432, G03B 1505

Patent

active

051647591

ABSTRACT:
A TTL automatic flash control camera capable of effecting TTL multi-flash control comprises a built-in flash apparatus capable of effecting preliminary flashing, a photoelectric converter for detecting the reflected light distribution information of the area of the object field divided into a plurality of areas by the preliminary flashing of the built-in flash apparatus, a determining device for determining the degree of weighting to the divided areas by the reflected light distribution information, a connecting portion capable of mounting a flash-controllable accessory flash apparatus, and a flash control device for causing the built-in flash apparatus to effect the preliminary flashing, and causing the accessory flash apparatus being mounted to effect main flashing after the photoelectric converter detects the reflected light distribution information, and effecting the control of the quantity of emitted light during the main flashing by the use of the degree of weighting determined by the determining device.

REFERENCES:
patent: 4643551 (1987-02-01), Ohmori
patent: 4705382 (1987-11-01), Mukai et al.

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