Exposure control system for flash photography

Details Exposure control system for flash photography Exposure control system for flash photography

1974-07-15

1977-01-25

Adams, Jr., Russell E.

354 33, 354 35, 354 60F, 354139, 354149, G03B 714, G03B 716

Patent

active

040054446

ABSTRACT:
A photographic flash exposure control system for a camera associated with a flash device. In conformance with a preselected shutter interval, an effective exposure aperture of a diaphragm device is computed by a computing circuit of the system. The total flash energy available from the flash device is automatically controlled in accordance with the luminance of the subject being photographed, to thereby provide correct exposure for complex lighting situations.

REFERENCES:
patent: 3710701 (1973-01-01), Takishima et al.
patent: 3836920 (1974-09-01), Uchiyama et al.

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