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Hyperfocal distance
The closest point a photographer can focus on where the
depth
of
field includes infinity. When the lens
is
focused for
hyperfocal distance, the deepest depth
of
field, covering from
1
/2
the hyperfocal distance to infinity, can be obtained at each
f
/s
top. The longer the focal length, the longer the hyperfocal
distance; the smaller the aperture (the larger the f/number), the
shorter the hyperfocal distance.
ISO film speed
The intemational standard for representing film sensitiv
it
y.
The
higher the number, the greater the sensitivity, and vice versa. A
film speed
of
ISO 200
is
twice
as
sensitive
as
ISO
100, and half
that
of
IS
O 400 film.
Matrix metering
sy
stem
An
advanced camera light metering system using a multi-
segment sensor and computer; available
in
the N70 and other
Nikon SLRs cameras.
When N70 camera
is
used with O-type
AF
Nikkor lenses, 3D
Matrix Metering wi
ll
be performed.
Monitor Pre-flash(es)
When performing Automatic Balanced Fill-Flash with
TIL
Multi
Sensor, the N70's built-in flash/dedicated Nikon Speed light
fires a seri
es
of
scarcely visible preflashes to enable the
camera's computer
to
pre-analyze the scene. The
TIL
Multi
Sensor inside the camera body reads the amount
of
reflected
light, then the camera's microcomputer determines the area
of
126
the
TIL
sensor to be used for flash output control and adjusts
the flash output level. The Monitor Pre-flashes are visible but
not recognizable.
Rear-Curtain Sync
Flash fires an instant before the second
(rear)
curtain
of
the
focal plane shutter begins to move. When sl
ow
shutter speeds
are used, this feature can create a blur effect from the ambient
light, i.e., a
fl
owing-light pattems following a moving subject
with subject movement frozen at the end
of
th
e light flow.
(See
"Front-Curtain Sync".)
Single Servo
AF
Once the subject
is
in
focus, focus
is
locked. Useful for
recomposing the picture.
Slow Sync
A flash technique for using the flash at a slow shutter speed.
Flash shooting
in
dim light or at night at a fast shutter speed
often results
in
a flash-illuminated subject against a dark
background. Using a slower shutter speed with the flash brings
out the background details
in
the picture. Use of a slow shutter
speed with Rear-Curtain Sync
is
particularly effective for
illustrating the movement of a stream
of
light.
The N70's Slow Sync mode extends the automatically
contro
ll
ed shutter speed range
(in
Programmed Auto and
Aperture-Priority Auto) down to 30 sec.