TM 5-6675-319-14
Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..A term used to describe the separation of
tones in a negative or print. A picture which
has only a slight increase in density from
tone to tone for a given increase in exposure
is termed “low in contrast”: one which has a
large increase for the same increase in
exposure is said to be “high in contrast”.
Density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A numerical measure of the blackening, or
light-stopping ability, of a photographic
image.
Densitometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . An instrument for making density
measurements.
Density Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. The measured difference between the
Dodging . . . . . . . .
Edge Enhancement. . . . . .
Emulsion. . . . . . .
Emulsion Speed. . . . . .
Exposure. . . . . .. . . .
Exposure Meter. . . . . . . . .
Fast Axis Control Loop. . . . . . . . . . .
Film. . . . . .. . . . . . . . . . . . .
Filter. . . . . . . . . . . . . . . . . . . . .
9-2
maximum and minimum densities of a
particular negative or positive.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Process of holding back light from certain
areas of a sensitized surface to avoid
overprinting those areas; also to avoid
underprinting other areas.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase density and contrast of a
photographic image by chemical treatment.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The light-sensitive coating of a photographic
material, mainly silver saits suspended in
gelatin.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The rate of response of a photographic
emulsion to light, determined under standard
conditions of exposure and subsequent
development.
. . . . . . . . . . . . . . . . . . . . . . . The quantity of light which is allowed to act
on a photographic material. Numerically, the
product of the intensity and the duration of
the light acting upon the film.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . An instrument used to determine the
Change 1
intensity of light falling on, or reflected by, a
subject which is to be photographed.
. . . . . . . . . . . . . . . . . . . . . Controls speed at which a spot of light
sweeps in horizontal direction.
. . . . . . . . . . . . . . . . . . A photographic emulsion coated on a flexible
translucent or transparent plastic base.
. . . . . . . . . . . . . . . . A square piece of gelatin or glass—placed
between the copy and the photographic
material—that reduces or stops light of
certain colors while allowing light of other
colors to reach the emulsion.
