LESSON 1
Kodak Safelight Filter OC (light amber) or equivalent.
Recommend Kodak Ekatamtic A10 Activator and S30 Stabilizer; or
tray develop in Dektol developer.
ANSI paper speed, white light, with stabilizing processor 400;
white light with tray process 120.
Primarily recommended for tungsten enlarging bulb.
6. Summary. You should now be familiar with the characteristics of
photographic paper including construction, surface, tint, and base. If
there is any area you are not sure of, go over it again. If you feel
competent in your knowledge of the material, go to Learning Event 4.
Learning Event 4:
DESCRIBE PRINT PROCESSING
1. Chemicals for printing. The chemistry for print development is similar
to that of film development. It is possible to use the same developers, but
for the best results use a developer specifically made for prints. The
Dektol formula is a standard print developer used in most photographic
laboratories. This developer will produce top quality prints when used in
accordance with manufacturer's instructions. At most military photographic
facilities, the type of paper has already been determined for you, due to
the supply system and local commander's preference as to the type of print
contrast needed to meet mission requirements.
a. But for the average paper development, Dektol developer is ideal.
It has a longer shelf life after being mixed than most other developers.
b. There might be times when you have to use a special type of paper to
produce a specific type of photograph. Then you must follow the paper
manufacturer's recommendations as to what type of developer to use for the
best results.
2.
Developing paper using tray method
a. A good print is the result of proper exposure, full development,
correct solution temperatures and, with polycontrast papers, the right
contrast filter. Because prints are developed under safelight illumination,
it is easy to be misled by the apparent contrast in the image. It may seem
to be fully developed before it has been through its prescribed processing
time; therefore prints, when dry, have a gray and flat appearance.
32
Previous Page
