Nikon PRONEA S - About Focus and Exposure

0
sa
Focus,
exposure
and
the metering
system
are impodant factors
in taking
pictures.
Knowing the characteristics of each
helps
you
widen
your
photographic
expression.
G
Focus
and depth of
field
When focusing, depth of
field
should be considered.
Depth of field is
the
zone of sharpest
focus in front of and behind
the
subject
on which the lens is
focused. lt varies
according
to
shooting distance,
focal length and, above all, aperture. Smaller apertures
(larger
f-numbers)
will
produce
a deeper depth of
field where the background and
foreground
become
sharper;
larger
apertures
(smaller
f-numbers) will
produce
a shallower depth
of field where the
background becomes blurred.
S
Exposure
Light
from the
subject
passes
through the lens and is sensed by
the film. Light reaching the
film is
controlled
by the shutter speed and apedure.
The
proper
combination of shutter
speed and aperture
for
subject brightness and
film sensitivity results
in the
correct
exDosure.
The
PRONEA
S's General-Purpose
Program, Auto-Multi
Program
and
Vari-Program
automatically
control shutter speed and aperture.
In Shutter-Priority
Auto
exposure
mode,
you
can manually
set the shutter speed and the camera automatically sets
the
proper
aperture.
In Aperture-Priority
Auto
exposure
mode,
you
can manually set aperture and
the
camera automatically
sets
the
proper
shutter speed.
#
Metering System
As the
proper
combination
of shutter speed and aperture
for
correct exposure
is determined
according
to subject brightness and
film
sensitivity,
measuring subject brightness is very
important.
In
general,
brightness
inside the viewfinder is not uniform.
The PRONEA
S
provides
Matrix
Metering.
With Matrix Metering, data on scene brightness
is
detected by
the six-segment
Matrix sensor.
(With
lx-Nikkor
and
D-type AF Nikkor lenses,
the PRONEA
S camera
performs
3D Matrix
Metering. See
page
49.)
32
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