Flash control method and apparatus for variable focal length cam

Details Flash control method and apparatus for variable focal length cam Flash control method and apparatus for variable focal length cam

1991-05-20

1992-10-27

Adams, Russell E.

354132, 3541491, G03B 1503

Patent

active

051593793

ABSTRACT:
A variable focal length camera is provided with a built-in flash unit having a wide illuminating angle, and an external flash unit having a narrower illuminating angle can be externally attached to the camera. When the taking lens is set in a short focal length region, the external flash unit is used for pre-emission prior to an exposure so as to prevent the red-eye phenomenon, and a built-in flash unity is used for main-emission during the exposure. When the taking lens is set in a long focal length region, the built-in flash unit is used for the pre-emission and the external flash unit is used for the main-emission.

REFERENCES:
patent: 4870438 (1989-09-01), Taniguchi et al.
patent: 5023639 (1991-06-01), Ushiro et al.
patent: 5051763 (1991-09-01), Yukevich, Jr.
patent: 5109845 (1991-05-01), Asakura et al.

Affiliated with

Also associated with

Rating

Flash control method and apparatus for variable focal length cam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flash control method and apparatus for variable focal length cam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flash control method and apparatus for variable focal length cam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-908780