Exposure control system for flash photography

Details Exposure control system for flash photography Exposure control system for flash photography

1984-12-18

1987-05-26

Perkey, William D.

354420, G03B 716, G03B 1503

Patent

active

RE0324256

ABSTRACT:
A flash photographic exposure control system for a camera having an electrically timed shutter is provided with an additional electronic or mechanical timing device in combination with an electronic changeover switch responsive to attainment of the threshold level of the flash unit associated therewith. This is done to switch the camera from an automatic daylight exposure range to an automatic flash exposure range in which a particular timed interval suited for flash photography is made by the timing device which is brought into cooperation with the shutter operating means when the changeover switch is actuated, while the intrinsic timing device for the shutter being cut off from the control means for the shutter.

REFERENCES:
patent: 3273478 (1966-09-01), Kinder
patent: 3326103 (1967-06-01), Topaz
patent: 3416422 (1968-12-01), Dietrich et al.
patent: 3507196 (1970-04-01), Ruhle et al.
patent: 3535991 (1970-10-01), Kitai
patent: 3538827 (1970-11-01), Fuwa
patent: 3610122 (1971-10-01), Biber
patent: 3638543 (1972-02-01), Kondo
patent: 3667357 (1972-06-01), Matsuda
patent: 3675547 (1972-07-01), Uchiyama et al.
patent: 3678828 (1972-07-01), Mashimo et al.
patent: 3688663 (1972-09-01), Uchiyama et al.
patent: 3699858 (1972-10-01), Ogiso et al.
patent: 3720144 (1973-03-01), Uchiyama
patent: 3748978 (1973-07-01), Yoshimura et al.
patent: 3750550 (1973-08-01), Kasemeier et al.
patent: 3757643 (1973-09-01), Burgarella
patent: 3805278 (1974-04-01), Matsuzaki et al.
patent: 3836922 (1974-09-01), Hasegawa et al.
patent: 3886568 (1975-05-01), Yazaki et al.
patent: 3893143 (1975-07-01), Taguchi et al.
patent: 3953864 (1976-04-01), Iwata et al.
patent: 3971049 (1976-07-01), Ohmori et al.
patent: 4030108 (1977-06-01), Yazaki et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-694551