Glossary, Glossary -55 – Nikon N4004s User Manual
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GLOSSARY
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 SB-24/SB-23/
SB-22/SB-20’s AF illuminator 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,
DX film setting, film loading and power rewind. It even automati
cally carries out such advanced techniques as exposure
compensation and balanced fill-flash.
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