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16
U n p rocessed Film Before and After Exposure
Exposed film, particularly color, deteriorates more rapidly
than unexposed film. Process films as soon as possible
after exposure.
Do not keep film in the camera or magazine longer than
is necessary. If you load magazines a long time ahead of
use, protect them from excessive temperature and re l a t i v e
humidity until you need to load the camera.
Keep loaded cameras or magazines and carrying cases
out of closed spaces that can trap heat from the sun or
other sources such as closed automobiles, airplanes, or the
holds of ships.
Immediately after exposure, re t u rn the film to its can and
retape the can to help prevent any increase in moisture
content.
P rocessed Film Storage
The following suggestions apply to extended storage of all
motion picture films. Be aware that color dyes are more
p rone to change than are silver images over extended
periods, with heat and humidity being the chief factors.
B e f o re any extended storage (ten years or more), these
minimum guidelines should be followed:
1. Make sure the film was adequately washed to re m o v e
residual chemicals, and the residual hypo level does not
exceed the recommended maximum. ANSI PH 4.8-
1985 describes a test method for residual hypo.
2. At present, only EASTMAN EKTACHROME Motion
P i c t u re Films re q u i re stabilization during processing for
dye stability. Be sure process specifications have been
strictly followed.
3. All film should be as clean as possible. Cleaning is best
done professionally. If you use a liquid cleaner, pro v i d e
adequate ventilation. Adhere to local municipal codes
in using and disposing of any solvents.
4. Keep film out of an atmosphere containing chemical
fumes, such as hydrogen sulfide, hydrogen pero x i d e ,
sulfur dioxide, hydrogen sulfide, ammonia, coal gas,
and automobile engine exhaust.
5. Do not store processed film above the re c o m m e n d e d
21°C (70°F), 20 to 50 percent RH for acetate or
for polyester, if extended life expectancy is to be
m a i n t a i n e d .
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