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"-CONTROLS
lN
DETAIL-
continued
Aperture
Setting
The aperture
controls
the amount
of
light
passing
through
the
lens. When
moving
f rom
one
f/stop to the
next, the
amount
of
light is either
halved or doubled.
For example,
to
halve the
amount of
light,
rotate the
lens aperture
knob
(in
the case of
the LW-Nikkor,
rotate the
aperture
ring)
until
the aperture
index is
opposite
the
.next
smaller
aperture
(indicated
by a
numerically
larger
f-number on the aperture
scale).
To
double
the amount
of
light through the
lens, rotate
the
lens aperture
knob
until the
aperture
index is
opposite
the
next larger aperture
(the
next smaller
f-number).
Because
the
Nikkor
lenses
for the Nikonos-V
do
not
have click-stops
at
each
f-number, any
setting
can be
used.
(The
LW-Nikkor
does
have
click-stops
between
f-numbers,
but
intermediate settings
can still be
5t
used.)
As the aperture
is
opened
and
closed,
the
pincer-type
depth-of-field
indicators open
and
close
to show
the distance
range which
will be
in
focus in
the
f inalphotograph.
See
page
39for
more information.