color prints from color negatives.
Either contact or projection printing
methods may be used.
(1) It
is
designed
to
be processed
in
Kodak
Ektaprint
2
(EP 2)
chemicals.
(2) There are various methods used for processing Ektacolor paper;
all produce satisfactory color prints. The volume of prints to be produced
is the main factor that determines which method you should use.
(a) If the requirement for color prints is small, tube (or even
tray) processing may be used satisfactorily.
(b) For volume production color work, an automated continuous
processor is recommended. The initial expense of the equipment will be more
than compensated for over time by the savings accomplished in man-hours and
materials.
b. Ektacolor Resin-coated (RC) Paper. Ektacolor resin-coated paper is
an integral tripack emulsion. It has three light-sensitive emulsion layers.
Each emulsion layer is sensitive to one primary light color. The order of
emulsion layers is red-sensitive on top, followed by green-sensitive, and
blue-sensitive on the bottom. This is reversed from that of the negative.
c. Reciprocity Failure. Color printing paper also exhibits reciprocity
failure very similar to film materials when varying exposure times are used.
(1) Reciprocity failure differs in degree between the three-print
emulsion layers and will cause serious differences in color balance. It is,
therefore, recommended that exposure times shorter than 5 seconds and longer
than 45 seconds be avoided, since this could cause a shift in the emulsion
layers.
(2) This is why it is generally advisable to rely on the diaphragm
(f/stop) when adjusting for print density while keeping the exposure time
constant.
Since you are working with three emulsion layers, you must be
very careful with your exposures.
(3) In effect, if you encounter reciprocity failure, you have an
apparent loss of film speed, and the colors in the emulsion layers will
shift, meaning the colors are not rendered in their true colors.
3-11
SS0514
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