Camera with release control and automatic film sensitivity setti

Details Camera with release control and automatic film sensitivity setti Camera with release control and automatic film sensitivity setti

1985-11-26

1987-09-01

Perkey, W. B.

354400, 354412, 354441, 354217, 354268, G03B 160, G03B 724, G03B 1738

Patent

active

046905308

ABSTRACT:
A release operation of a camera adapted to be transferred to a normal photographing condition through winding-up of a film by a predetermined length is allowed in conditions before transfer to the normal photographing condition even if a release inhibition signal is being generated. Whether or not the camera is in the normal photographing condition is determined based on the state of a switch which is turned OFF upon transfer of the camera to the normal photographing condition. The turn-OFF of the switch always causes the camera to read a code pattern on a film cartridge to automatically set the film sensitivity represented by the code pattern. The camera is also capable of manual film speed setting. When a new battery is loaded in the camera while it is the normal photographing condition in and while a film cartridge with no code pattern is being used, the camera is adapted to start light measurement and exposure calculation only when a film sensitivity setting switch which allows manual film sensitivity setting is turned ON, thereby urging a camera operator to verify the film sensitivity of the film. In contrast, when a new battery is loaded in the camera while it is in the normal photographing condition when a film cartridge with the code pattern is being used, the camera reads the code pattern upon detection of loading of the battery.

REFERENCES:
patent: 4054888 (1977-10-01), Kozuki et al.
patent: 4135797 (1979-01-01), Ohmura et al.
patent: 4200371 (1980-04-01), Suzuki et al.
patent: 4304475 (1981-12-01), Kitai et al.
patent: 4431283 (1984-02-01), Hoda et al.
patent: 4435058 (1984-03-01), Yoshida et al.
patent: 4464031 (1984-08-01), Iwashita et al.
patent: 4500183 (1985-02-01), Tanikawa
patent: 4538890 (1985-09-01), Ishizaka et al.

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