Photographic printing method and system

Details Photographic printing method and system Photographic printing method and system

1994-06-14

1995-08-01

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 41, 355 68, 355 71, G03B 2773

Patent

active

054383897

ABSTRACT:
A film analyzer calculates exposure correction amounts for red, green, and blue colors in an image of an original frame of a spliced long film by using the characteristic values of a scene determined from the output of a color image sensor. For a low LATD frame having a minimum value of three-color LATDs smaller than a reference value, a density of an ND filter to be used for printing is calculated in accordance with a difference between the minimum value and the reference value. The long film is loaded into an auto-printer from the film analyzer. A photometry sensor measures three-color LATDs of an original frame set to a print station of the auto-printer. A print exposure time of each color is calculated from the three-color LATDs and exposure correction amounts. Immediately before the low LATD frame is set to the print station, an ND filter having the density determined in advance is inserted into a printing path. Three-color LATDs are measured while the ND filter is inserted into the printing path.

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