GLOSSARY------------------
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AEL (Auto Exposure Lock): AEL
is
recommended for shooting
small dark subjects against a bright background or for shooting
dramatic sunset scenes. When AEL
is
used
in
program, shutter-
priority or aperture-priority auto exposure mode, camera auto-
matically switches to centerweighted metering.
AF
illuminator: When existing light
is
below a certain level
and the camera
is
set for autofocus mode, the S8-24/S8-23/
S8-22/S8
-2
0's AF i
ll
uminator turns
on
automatically and
provides enough subject contrast to enable the N4004s
autofocus system to function as though
it
were daytime.
Centreweighted metering: In manual mode, or when the
AEL
button
is
used
in
auto exposure modes, the camera automati-
cally switches to centreweighted metering. This secondary
metering system places special emphasis on brightness within
the 12mm-diameter central area of the viewfinder, making the
N4004s exceptionally versatile for a wide variety of subjects.
Decision Master System: Nikon's exclusive optoelectronic
system integrates camera and lens computers to provide full
automatic control of all camera and lens operations, from auto-
focus to auto exposure, built-in TTL flash, built-
in
motor drive,
OX
film setting, film loading and power rewind.
It
even automati-
cally carries out such advanced techniques
as
exposure
compensation and balanced fill-flash.
54
Depth of field: The zone of acceptable sharpness
in
front of
and behind the subject
on
which the lens
is
focused. Depth of
field can be increased by using small apertures (large f-numbers)
or short focal-length lenses, or by taking the picture from farther
away.
To
reduce depth of field use large apertures (small
f-numbers), long focal-length lenses, and/or near subjects.
OX-code: Film information code printed
on
the
fi
lm cartridge.
The N4004s automatically senses the film speed (ISO 25 to
5000) of OX-coded film the instant f
il
m
is
loaded.
EV system: See page
52
and
53.
Balanced fill-flash: Subjects lit from behind or near a window
normally appear too dark
in
photographs, so
it
is recommended
you use a flash for fill-in lighting. Although conventional auto-
matic fill-flash system often result
in
well-exposed subjects, the
background may be washed out of dark. The Decision Master
System of the N4004s performs balanced fill-flash with the
multi-sensor metering, so both subject and background are
correctly exposed, to produce a well-balanced picture.
f-number: Number which indicates brightness of film plane
image.
The
f-number series
is
1.4,
2,
2.8,
4,
5.6,
8,
11
,
16
, 22,
32, etc. Changing one step to the next largest number (i.e., from
f11
to
f16)
decreases image brightness
by
1/2; moving to next
lower number doubles brightness.
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