film. Because of the inherent high contrast of
photographic papers, if not controlled, contrast is gained
in each generation of a reproduction. Kodak
Internegative film is designed to give greater contrast
separation in the highlights without raising the overall
subject contrast in the negative. To achieve proper color
balance in the shadows, midtones, and highlights, you
must perform tests to assure that proper exposure and
color filtration is obtained. The Photo-Lab Index
contains the procedures necessary to accomplish this
copy each type of matter with an appropriate film
separately and then sandwich the two negatives
together, or print the two negatives separately on the
same piece of paper. The colored lines should be copied
with an extremely high contrast film, such as Kodalith
Pan, and the pastel-colored portions of the original
should be copied with a moderate contrast film.
combined line and continuous-tone original with a
Copy film or Kodak Commercial film.
of gray. Examples of halftone originals are printed
pictures in newspapers or magazines. Small dots with
a light tone or highlight. Large dots that are close
together produce the illusion of dark tones or shadow
areas. Because the dots are all the same tone (black),
halftone originals can be copied as line originals. This
type of original can also be copied as a continuous-tone
original, depending on the use of the final product.
Produced for Copying
normal density, color saturation, and a glossy surface.
typewriter ribbon. A carbon "one time" ribbon is best.
paper background, you can place a sheet of carbon paper
behind the typing paper. This causes the carbon to be
transferred onto the back of the paper during typing.
typing to no more than 8 double-spaced lines with
43 elite or 36 pica characters to a line. When
photographing typed copy, use a template as a guide for
setting up your camera Allow about 1/8 inch of space
outside the template lines in the camera viewfinder.
in its original condition. By use of appropriate corrective
flattened by placing the original on a mounting board
and then in a heated dry-mounting press. Mounting in
this manner is permanent and should be considered
carefully before being used.
squeegee it onto a sheet of glass with the emulsion
toward the glass. The photograph must be removed from
the glass before it dries; otherwise, it may stick to the
can be eliminated in the reproduction by using
panchromatic film and a filter that is the same color as
the stain. Details on eliminating images of stains with
filters is discussed in chapter 3.
documents that have faded and are yellowed should be
Basic Photography Course