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Depth of field
The
zone of sharpest focus
in
front of, behind and around
the
subject on which
the lens is
focused. When
this
zone of
sharpness
is
large,
the
depth of field
is
said
to
be
deep;
when
it
is
small,
the
depth of
field is
said
to
be shallow. Depth of
field
varies according
to numerous factors
such as
focal length
,
aperture,
shooting
distance, etc.
D-type AF Nikkor lenses
AF
Nikkor lenses that
send
to the
N70's
microcomputer the
Distance Information used for
3D
Matrix Metering
or 3D
Multi-
Sensor Balanced
Fill-Flash
(with
Nikon
SB-28/SB-27/SB-26/
SB-25 Speed
light).
Identified
by
the letter "0"
which
follows information
on
maximum aperture (e.g., AF
Zoom-Nikkor
35-80mm
f/4-5.60).
All AF-S/AF-I
Nikkor lenses
are
O-type.
OX code
Film
information code printed on
film
cartridge.
The
N70,
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 EV
1 .
The
camera
may
be used only within the EV range of
the
exposure
meter. For
example, with
the N70,
the exposure
metering
range
is from EV
-1
to EV
20 for
Matrix metering
and
Center-Weighted
metering,
at ISO
100
with an
f/
1.4 lens.
Exposure bracketing
Shooting
the
same subject at a
range
of different exposures.
The N70
camera
provides
All
Mode Exposure Bracketing
and
Flash Exposure Bracketing.
Exposure compensation
Exposure
compensation for available light is activated
by
changing shutter speed and/or
lens
aperture- by Auto
exposure
lock button, by
exposure compensation function or
by
exposure
bracketing.
In flash
photography with a
Nikon-dedicated TIL
Speedlight,
exposure compensation can
also be performed
by varying
the
amount of
flash
output. (See
"Flash
Output
Level
Compensation.
")
123
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