Annunciator for flash photographing system

Details Annunciator for flash photographing system Annunciator for flash photographing system

1982-09-30

1984-10-16

Gellner, Michael L.

354456, 354471, 354480, G03B 1503, G03B 914, G03B 708, G03B 1718

Patent

active

044771703

ABSTRACT:
A flash photography system including a computer type electronic flash device and a camera controlling the exposure value by using the light coming from an object to be photographed and reflected from the shutter curtain and/or film surface is disclosed. The leading and trailing curtains in the slit shutter of the system run down simultaneously when test firing occurs, and the flash device controls the amount of flash light in accordance with an equivalent reflected light from the shutter curtain surfaces to that from the film surface. When the aforesaid amount of light reflected has reached a prescribed level, an annunciator is energized to inform the operator that a correct exposure can be obtained.

REFERENCES:
patent: 3922693 (1975-11-01), Matsui
patent: 4238149 (1980-12-01), Uchiyama et al.
patent: 4295717 (1981-10-01), Kitagawa

Affiliated with

Also associated with

Rating

Annunciator for flash photographing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Annunciator for flash photographing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Annunciator for flash photographing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1943634