Optics: motion pictures – Removable film strip magazine type
Patent
1986-09-12
1988-05-24
Adams, Russell E.
Optics: motion pictures
Removable film strip magazine type
352169, G03B 708
Patent
active
047469498
ABSTRACT:
The disclosed image sensing device has a light measuring circuit for measuring the luminance of an object to be photographed or recorded and a photometric characteristic control circuit for shifting the photometric characteristic of the light measuring circuit from one characteristic to another according to change-over between a still picture taking mode and a motion picture taking mode. The photometric characteristic control circuit makes the photometric sensitivity distribution of the light measurement circuit more averaged or uniformalized in the motion picture taking mode than in the still picture mode.
REFERENCES:
patent: 3887930 (1975-06-01), Bresson
patent: 3889276 (1975-06-01), Shirai
patent: 4176930 (1979-12-01), Imura
patent: 4202610 (1980-05-01), Kittag
patent: 4366501 (1982-12-01), Tsumekawa et al.
Okino Tadashi
Takei Masahiro
Adams Russell E.
Canon Kabushiki Kaisha
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