Proportional fill flash

Details Proportional fill flash Proportional fill flash

G - Physics

03

B

95/46.1, 95/53.5

G03B 15/03 (2006.01) G03B 7/16 (2006.01) G03B 15/04 (2006.01)

Patent

CA 1135985

5991 ABSTRACT OF THE DISCLOSURE A photographic camera control system is provided for varying the time at which a source of artificial illumination is energized subsequent to the commencement of a photographic exposure interval in accordance with variations in the ambient scene light intensity and the camera-to-subject range. The control system operates to energize the source of artificial illumination at later times and hence larger aperture values under conditions of insignificant ambient scene light intensity than under conditions of substantially higher ambient scene light intensity for identical camera-to-subject distances. The control system additionally operates to control the energization of the source of artificial illumination during a photographic exposure interval occurring under conditions of substantially high ambient scene light intensity so that a select portion of the optimum film exposure value may be directly attributable to the ambient scene light while the remaining portion of the optimum exposure value is directly attributable to the artificial scene light provided by the source of artificial illumination.

339506

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-183094