Nikon N70 Instruction Manual - Page 126

Hyperfocal distance, ISO film speed, Matrix metering, Monitor Pre-flashes, Rear-Curtain Sync, Single - slr

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Page 126 highlights

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/stop. 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 sensitivity. 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 ISO 400 film. Matrix metering system An advanced camera light metering system using a multisegment 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 will be performed . Monitor Pre-flash(es) When performing Automatic Balanced Fill-Flash with TIL Multi Sensor, the N70's built-in flash/dedicated Nikon Speedlight fires a series 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 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 slow shutter speeds are used, this feature can create a blur effect from the ambient light, i.e., a flowing-light pattems following a moving subject with subject movement frozen at the end of the 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 controlled shutter speed range (in Programmed Auto and Aperture-Priority Auto) down to 30 sec. 126

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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.