1993-07-15
1994-06-28
Perkey, W. B.
354422, G03B 716, G03B 1503, G03B 7097
Patent
active
053251474
ABSTRACT:
An exposure control apparatus of a camera having a photometer, a film sensitivity detector, a calculator which calculates an exposure value, a diaphragm value and a shutter speed in accordance with a measurement by the photometer and the film sensitivity, an object distance detector, a strobe, a limit diaphragm value calculator that calculates a first limit diaphragm value, which varies with the film sensitivity, and a second limit diaphragm value, which varies with the object distance, when strobe light is emitted, and a minimum limit diaphragm value setting device which compares the first and second limit diaphragm values and selects the larger diaphragm value as the minimum limit diaphragm value to be used in the exposure control.
REFERENCES:
patent: 4653893 (1987-03-01), Inoue et al.
patent: 4779115 (1988-10-01), Fujino et al.
patent: 4779117 (1988-10-01), Fujino et al.
patent: 4806963 (1989-02-01), Kobayashi et al.
patent: 4833499 (1989-05-01), Nishida
patent: 4908651 (1990-03-01), Fujino et al.
patent: 5005042 (1991-04-01), Sato et al.
patent: 5051769 (1991-09-01), Hayashi et al.
patent: 5220364 (1993-06-01), Kobayashi et al.
Preliminary Search Report and Annex, Dec. 1, 1993.
Patent Abstracts of Japan, vol. 15, No. 466 (P-1280), Nov. 26, 1991.
United Kingdom Search Report, Aug. 1993.
Hirai Isamu
Kirigaya Tadayuki
Matsudo Nobuhiko
Tsuji Hideaki
Asahi Kogaku Kogyo Kabushiki Kaisha
Perkey W. B.
LandOfFree
Exposure control apparatus of a camera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Exposure control apparatus of a camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure control apparatus of a camera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2380235