Nikon 1768 Instruction Manual - Page 139

Glossary

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GLOSSARY Balanced fill-flash operation A technique in flash photography in which flash illumination is controlled to balance it with the ambient light on the scene. The N90 uses an Automatic Balanced Fill-Flash System with TIL Multi-Senosr for this automatic operation with a compatible Nikon TIL Speedlight. Continuous Servo AF Focus detection continues for as long as the shutter release button is lightly pressed and the reflex mirror is in the viewing position. Useful when camera-to-subject distance is likely to change . CPU Central Processing Unit. The electronic component which controls an electronic product's functions. AF Nikkor (including AF-D Nikkor) and AI -P-Nikkor lenses have built-in CPUs. Depth of field The zone of sharpest focus in front of, behind and around the subject on which the lens is focused; can be previewed in the N90 and some other Nikon cameras D-type AF Nikkor lenses AF Nikkor lenses that send to the N90's microcomputer the Distance Information used for 3D Matrix Metering or 3D MultiSensor Balanced Fill-Flash (with Nikon SB-25 Speedlight). DX code Film information code printed on film cartridge. The N90, when set to automatic film speed setting mode, senses the film speed (ISO 25 to 5000) of OX-coded film when it is loaded. EV Exposure Value: A number representing the available combinations of shutter speeds and apertures that give the same exposure effect under conditions of similar scene brightness and ISO. At ISO 100, the combination of a one-second shutter speed and an aperture of f/1 .4 is defined as EV1 . The camera may be used only within the EV range of the exposure meter. For example, with the N90, the exposure metering range is from EV -1 to EV21 for Matrix metering and Center-Weighted metering, at ISO 100 with an 1/1.4 lens. Exposure compensation Exposure compensation for available light is activated by changing shutter speed and/or lens aperture- by Auto exposure lock lever, by exposure compensation button or by exposure bracketing. In fiash photography with a Nikon-dedicated TIL Speedlight, exposure compensation can also be performed by varying the amount of fiash output. Camera-originated exposure compensation affects both foreground subject and background; variations in flash output amount only affect foreground . 139

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GLOSSARY
Balanced fill-flash operation
A technique
in
flash photography
in
which flash illumination
is
controlled
to
balance
it
with the ambient light on the scene. The
N90 uses
an
Automatic Balanced Fill-Flash System with
TIL
Multi-Senosr for this automatic operation with a compatible
Nikon
TIL
Speedlight.
Continuous Servo AF
Focus detection continues for
as
long
as
the shutter release
button
is
lightly pressed and the reflex mirror
is
in
the viewing
position. Useful when camera-to-subject distance
is
likely to
change.
CPU
Central Processing Unit. The electronic component which
controls an electronic product's functions.
AF
Nikkor (including
AF
-D Nikkor) and
AI
-P-Nikkor lenses have
built-in CPUs.
Depth of field
The zone
of
sharpest focus
in
front
of
, behind and around the
subject on which the lens
is
focused; can be previewed
in
the
N90 and some other Nikon cameras
D-type AF Nikkor lenses
AF
Nikkor lenses that send to the N90's microcomputer the
Distance Information used for 3D Matrix Metering or 3D Multi-
Sensor Balanced Fill-Flash (with Nikon SB-25 Speedlight).
DX code
Film
information code printed on film cartridge. The N90, when
set to automatic film speed setting mode, senses the film
speed (I
SO
25 to 5000)
of
OX
-coded film when
it
is
loaded.
EV
Exposure Value: A number representing the available
combinations
of
shutter speeds and apertures that give the
same exposure effect under conditions
of
similar scene
brightness and I
SO.
At
ISO
100, the combination
of
a one-second shutter speed
and an aperture of
f/1
.4
is
defined
as
EV1
.
The camera may be used only within the
EV
range
of
the
exposure meter. For example, with the N90, the exposure
metering range
is
from
EV
-1
to
EV21
for Matrix metering and
Center-Weighted metering, at I
SO
100 with an 1/1.4 lens.
Exposure compensation
Exposure compensation for available light
is
activated by
changing shutter speed and/or lens
aperture-
by Auto
exposure lock lever, by exposure compensation button or by
exposure bracketing.
In
fiash photography with a Nikon-dedicated
TIL
Speed light,
exposure compensation can also be performed by varying the
amount
of
fiash output.
Camera-originated exposure compensation affects both
foreground subject and background; variations
in
flash output
amount only affect foreground.
139