1990-07-23
1992-05-12
Perkey, W. B.
354422, 354137, G03B 1505
Patent
active
051132168
ABSTRACT:
A camera comprising a semi-open type shutter which also serves as a diaphragm, a flash device, a setting circuit for setting an aperture value for flash photography, and a control circuit for varying the opening speed of the shutter in accordance with the aperture value set by the setting circuit, whereby the previously set aperture value is established with high accuracy and reliability during the flash emission.
REFERENCES:
patent: 4354748 (1982-10-01), Grimes et al.
Canon Kabushiki Kaisha
Perkey W. B.
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