balanced for use with illumination of 3200 K without
exposing light for color negative films. When an
negative film is balanced, adjustments to the filter pack
can be made during printing to achieve proper color
balance. With color reversal film, however, a slide is
usually the final product. When the color of the exposing
light is other than that for which the film is balanced, the
transparencies are off-color. You should strive to expose
for color film is most accurate when the illumination
used is the one for which the film is balanced.
markets color films for both professional and amateur
by professionals are identified by the word professional
in the name; for example, Kodak Vericolor III
Professional Film, Type S (VPS).
Also, they have emulsions made up of many different
chemicals that tend to change slowly with time. Starting
from the day they are made, all color films begin to
change; and as the films age, their color balance
The manufacturer allows for the time amateur film will
be in storage, on the store shelf, and in the camera before
it is developed. The ISO speed assigned is adequate for
calculating exposure for normal picture-taking
are shipped from the factory. These films should be kept
refrigerated or frozen until shortly before use.
Refrigeration keeps film near the optimum point until
used and provides the photographer with confidence in
consistent results. Precise film speeds are provided for
processing to prevent any significant shift in color
balance after exposure.
appropriate for your work; however, when you intend to
be away from home base for an extended period of time
without refrigerated storage or processing facilities,
amateur film should be your choice.
picture film: peel apart and integral. After exposure and
removal from the camera, peel-apart film must be timed
away and discarded. Integral films develop outside the
camera and have no negative backing to be removed.
whereby the exposed silver halides develop to a metallic
pass to form the color image. Integral films use a
reversal process in which the areas of unexposed silver
form the positive image.
technology is not available. Instant picture film is used
commonly for identification and passport photographs,
but it is also valuable in determining test exposures.
Before you make your final exposures on conventional
film, a Polaroid photograph can be taken to confirm
composition, lighting, and exposure.
formats come in a variety of sizes.
film has a paper backing that prevents the film from
lighttight cassette that prevents the film from being
exposed by ambient light.
Basic Photography Course