Exposure meter

Details Exposure meter Exposure meter

1985-04-10

1987-06-09

Laroche, Eugene R.

Optics: measuring and testing

Photometers

Photoelectric

356218, 354474, 354475, G03B 708

Patent

active

046716556

ABSTRACT:
An exposure meter includes a display device 16 on which is displayed a histogram 17. The x axis is divided into cells representing ranges of possible luminance values. The height (i.e., y value) of each cell of the histogram represents the number of individual areas within the scene to be photographed whose luminance falls within that cell. Alongside the histogram, a bar 18 is displayed representing the range of luminance values which can be photographed, this being calculated according to the film characteristics, shutter speed and aperture size. The information displayed at 16 is provided by a processor which receives information from a keyboard 12 and a color camera photosensor onto which is focused an image of the scene to be photographed.

REFERENCES:
patent: 4182573 (1980-01-01), Yamada et al.
patent: 4364650 (1982-12-01), Terashita et al.
patent: 4395099 (1983-07-01), Terashita
Camera Report, Nilson FA-Part Two, L. Andrew Mannheim.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1825837