Motion picture camera

Details Motion picture camera Motion picture camera

1978-07-26

1980-04-29

Adams, Russell E.

Optics: motion pictures

With automatic diaphragm control

352 91C, 352 91S, G03B 708

Patent

active

042003644

ABSTRACT:
A motion picture camera wherein the diaphragm is adjusted in automatic response to signals from two outputs of a digital comparator which receives a first set of signals during each revolution of the shutter at a frequency varying as a function of changes of shutter speed and of changes of scene brightness. The comparator further receives a set of reference signals from a digital selector circuit during normal operation of the camera or from a binary counter when the camera is set for making exposures with fade-in, fade-out or lap dissolve. The counter forms part of a program circuit.

REFERENCES:
patent: 4006975 (1977-02-01), Wagensonner et al.
patent: 4084893 (1978-04-01), Flandorfer
patent: 4106864 (1978-08-01), Burgermann
patent: 4106865 (1978-08-01), Burgermann

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1681916