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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/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
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
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 Speed
light
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
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
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.
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