1974-10-29
1976-06-15
Hix, L. T.
354 23R, 354 50, 354 60R, 354235, 354238, G03B 958, G03B 708, G03B 1912
Patent
active
039640752
ABSTRACT:
In the photographic apparatus disclosed a long-exposure adapter is attached to a camera to lengthen the camera's shutter operating times. When the camera's light sensing system responds to a low illumination by setting the shutter time to B (infinite time), an operator shifts to the long exposure range. The adapter then responds to a high sensitivity sensor and a long exposure timing device in the adapter is adjusted for the low illumination. The adapter then operates the shutter release of the camera, which has been set to B to obtain long exposures.
REFERENCES:
patent: 3187653 (1965-06-01), Rentschler
patent: 3548732 (1970-12-01), Rentschler
patent: 3561342 (1971-02-01), Starp
patent: 3728952 (1973-04-01), Kiyohara
patent: 3733984 (1973-05-01), Yata
Kiyohara Takehiko
Mitani Taizo
Ogiso Mithutoshi
Ohtaki Syohei
Adams, Jr. Russell E.
Canon Kabushiki Kaisha
Hix L. T,.
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