Exposure control device for camera

Details Exposure control device for camera Exposure control device for camera

1991-02-14

1993-06-15

Adams, Russell E.

354412, 354443, 354420, 354422, G03B 700

Patent

active

052203646

ABSTRACT:
In an exposure control device employed in an electronically controlled camera, an exposure value, representing the relation between an exposure time and an aperture value, is determined in accordance with the brightness of an object to be photographed. In addition, the open F-number of a lens is determined based on a predetermined film sensitivity. When the exposure value is determined, it is limited to a predetermined minimum exposure value. In the camera, the minimum exposure value is compensated in accordance with the film sensitivity of the film to be used.

REFERENCES:
patent: 3757654 (1973-09-01), Mori
patent: 4075641 (1978-02-01), Uno et al.
patent: 4306785 (1981-12-01), Tano et al.
patent: 4309089 (1982-01-01), Harvey
patent: 4324462 (1982-04-01), Tano et al.
patent: 4502775 (1985-03-01), Kuroki
patent: 4652102 (1987-03-01), Ogawa et al.
patent: 4774536 (1988-09-01), Inoue et al.
patent: 4779115 (1988-10-01), Fujino et al.
patent: 4785323 (1988-11-01), Bell
patent: 4936664 (1990-06-01), Haraguchi et al.
patent: 4978981 (1990-12-01), Satoh et al.

Affiliated with

Also associated with

Rating

Exposure control device for 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 device for camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure control device for camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1046755