Automatic exposure controlling device for a camera

Details Automatic exposure controlling device for a camera Automatic exposure controlling device for a camera

1993-11-12

1995-09-19

Adams, Russell E.

354441, 354430, G03B 1336

Patent

active

054520479

ABSTRACT:
A device determines an aperture value Av and a time value Tv for controlling exposure, on the basis of the detected focal length, the detected image magnification and brightness of an object. First, a type of photography is determined according to the focal length (f) and a image magnification .beta., on the basis of fuzzy logic. Then, a combination of an aperture value Av and a time value Tv which are proper for the so-determined type of photography is automatically determined. The combination can be changed by a manual operation. If the combination is changed, a display showing a depth of field corresponding to the changed aperture value Av is indicated.

REFERENCES:
patent: 4974011 (1990-11-01), Azuma
patent: 4984006 (1991-01-01), Ikemura et al.
patent: 5019852 (1991-05-01), Yamamoto et al.
patent: 5084724 (1992-01-01), Maeno
patent: 5091742 (1992-02-01), Fukahori et al.
patent: 5103254 (1992-04-01), Bell et al.
patent: 5107293 (1992-04-01), Sekine et al.
patent: 5162834 (1992-11-01), Kichima
patent: 5170201 (1992-12-01), Akiyama et al.
patent: 5191372 (1993-03-01), Aihara

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1832099