EXPOSURE----------------------------------
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Exposure control consists of two
parts-aperture
control and
shutter speed control. The aperture works basically the same
way as the iris of the human eye and controls the amount of
light passing through the lens. The shutter, located
in
the
camera body, varies the amount of light admitted to the film
by
opening and closing at different speeds. Together, these two
controls determine the amount of light that strikes the film,
resulting
in
exposure control.
Using the shutter speed and aperture dials of the N4004s, you
can select three different automatic exposure control modes
and one manual mode.
22
Shutter Speed Dial and Aperture Dial
Always set dials at click-stop
positions-never
in-between.
The shutter dial locks at the A or L position, and the aperture
dial locks at the S position.
To
re
lease them, rotate the shutter
or aperture dial while pressing the dial lock-release button.
Lock shutter
re
leasel
turn off power
Time exposures
Interm
ed
iate se
tt
ings
Shutter speed
dial
A
1-2000
A
S,I-2000
Shutter
Speed
Dial
Aperture
Dial
Aperture
dial
S
S
1.4 - 32
1.4 - 32
Shutter speed settings
(1-1/2000
sec.)
Apertu
re
se
tt
ings
(t/l.4-32)
Exposure
mode
Program auto
Shutter-priority auto
Aperture·priority auto
Manual
