Photographic printing apparatus and exposure condition determini

Details Photographic printing apparatus and exposure condition determini Photographic printing apparatus and exposure condition determini

1993-04-13

1994-10-04

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 77, G03B 2780

Patent

active

053530950

ABSTRACT:
An image frame to be printed is divided into a plurality of portions, and the portions are photometrically measured. Photometric data necessary to determine an exposure condition is selected. Weighting factors, which are to be applied respectively to selected photometric data, to data obtained from first data obtained by photometric measuring of a plurality of films in accordance with film type identifying codes, and to data determined from second data obtained by photometric measuring of image frames to be printed which are recorded on a single film, are set based on the first data. The exposure condition is determined based on a value obtained by addition of respective weighted data. Hence, influence of color failure can be eliminated, and variations in film characteristics due to deterioration over time and the like can be eliminated. Accordingly, high-quality prints are thereby consistently obtained.

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