Nikon 1768 Instruction Manual - Page 49

Exposure

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EXPOSURE MODE Light reaching the film is controlled by shutter speed and lens aperture. The proper combination results in a correct exposure. Shutter speed and lens aperture settings are based on the ISO speed set for the film in use and the operation of the camera's exposure control system. The relationship between aperture and shutter speed is as follows: One change in shutter speed either doubles or halves the amount of light transmitted. For example, a shutter speed of 1/ 500 sec. passes half the light of 1/250 and double the light of 1/ 1000 sec. The aperture fiB passes half the light of f/ 5.6 and double the light of fl11. If the correct exposure for a scene is 1/ 500 at fiB, then we can also select 1/250 at fl11 or 111000 at f/5.6 and achieve the same exposure results , and so on. Metering range (for Matrix and Center-Weighted Metering with AF Nikkor 50mm fl1.4 lens) Metering range depends on the lens in use. With a lens having aperture from f12.8 to fl 32, metering range at ISO 100 will be from EV1 to EV23. 49

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EXPOSURE
MODE
Light reaching the film
is
controlled by shutter speed and lens
aperture. The proper combination results
in
a correct exposure.
Shutter speed and lens aperture settings are based on the
ISO
speed set for the film
in
use and the operation
of
the camera's
exposure control system.
The relationship between aperture and shutter speed
is
as
follows: One change
in
shutter speed either doubles or halves
Metering
range
the amount of light transmitted. For example, a shutter speed
of 1/500 sec. passes half the light
of
1/250
and double the light
of
1/ 1000 sec. The aperture fiB passes half the light
of
f/5.6
and double the light
of
fl11.
If
the correct exposure for a scene
is
1/500 at fiB, then we can also select
1/250
at
fl11
or 111000
at
f/5.6
and achieve the same exposure results, and so on.
(for
Matrix
and
Center-Weighted
Metering
with
AF
Nikkor
50mm
fl1.4
lens)
Metering range depends on the
lens
in
use.
With
a
lens
having aperture from
f12.8
to
fl
32,
metering range at
ISO
100 will be
from
EV1
to
EV23.
49