Exposure calculation device for a camera

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354428, G03B 708

Patent

active

055417060

ABSTRACT:
In an exposure calculation device for a camera including a photometric sensor which performs photometry on the light from an object to be photographed and outputs a photometric signal related to the brightness thereof and a calculation device which calculates an exposure value based upon the photometric signal, the calculation device calculates the exposure value based upon the value obtained by subtracting a compensation value signal from the photometric signal from the object to be photographed. This compensation value signal is the stored photometric signal obtained when a condition change-over device is in its condition to prevent light from an object to be photographed from reaching the photometric device, i.e. is the signal value due to the noise component or generated as a function of temperature.

REFERENCES:
patent: 3864701 (1975-02-01), Krause
patent: 3873827 (1975-03-01), Krause
patent: 4210394 (1980-07-01), Safo et al.
patent: 4284334 (1981-08-01), Magel
patent: 4364650 (1982-12-01), Terashita et al.
patent: 4411505 (1983-10-01), Sakai et al.
patent: 4445778 (1984-05-01), Nakauchi
patent: 4479708 (1984-10-01), Tokuda
patent: 4855780 (1989-08-01), Hayakawa
patent: 4929824 (1990-05-01), Miyazaki
patent: 4978990 (1990-12-01), Yamasaki et al.
patent: 4984085 (1991-01-01), Landowski
patent: 5168364 (1992-12-01), Kondo et al.
patent: 5184172 (1993-02-01), Miyazaki
patent: 5249015 (1993-09-01), Takagi et al.
patent: 5331422 (1994-07-01), Nishida

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