Photography modes switchable camera

Details Photography modes switchable camera Photography modes switchable camera

1982-10-12

1985-02-19

Perkey, William B.

354419, 354422, G03B 1505

Patent

active

045001910

ABSTRACT:
A camera including an objective lens device whose focal length is manually changeable, is automatically switched from a natural light photography mode to a flash photography mode when a low brightness condition detecting means generates a low brightness signal upon detection of a low brightness condition. A control means causes the detecting means to generate the signal at different brightness conditions in accordance with the change in the focal length of the objective lens device so that the automatic switching of the camera to the flash photography mode is effected with a higher brightness condition in the case of a longer focal length.

REFERENCES:
patent: 3824606 (1974-07-01), Yoshiyama
patent: 3836934 (1974-09-01), Suzuki et al.
patent: 3925797 (1975-12-01), Ettischer
patent: 4078240 (1978-03-01), Kaneko et al.
patent: 4407573 (1983-10-01), Wakabayashi et al.

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