Method of automatically controlling exposure when making prints

Details Method of automatically controlling exposure when making prints Method of automatically controlling exposure when making prints

1994-12-23

1995-10-24

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Methods

355 40, G03B 2780

Patent

active

054614589

ABSTRACT:
A method of automatically controlling exposure when printing from film which is exposed under controlled lighting conditions. The prevailing lighting conditions are determined by photographing a standard subject in the form of a gray-scale board with at least one field of gray and illuminated by the studio lighting. The gray scale is recognized as a standard subject during region-by-region analysis of the film's frames and the results obtained from the gray scale are employed as a film-specific standard in computing the levels of light to use for printing.

REFERENCES:
patent: 3735350 (1973-05-01), Lemelson
patent: 4274732 (1981-06-01), Thurm et al.
patent: 4279502 (1981-07-01), Thurm et al.
patent: 4492474 (1985-01-01), Miller
patent: 4529301 (1985-07-01), Rountree
patent: 5159385 (1992-10-01), Imamura
Dictionary of Photographic Technologies, D. A. Spencer 1973, p. 273.

Affiliated with

Also associated with

Rating

Method of automatically controlling exposure when making prints does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of automatically controlling exposure when making prints , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of automatically controlling exposure when making prints will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1890331