When using
the
2oo-foot film chamber,
the
SIGHT
is located on the
side
of
the
film chamber, and there is a PERISCOPIC
FINDER
on the
front
of
the chamber
which
must be swung
into
position
as
shown
in
Figure 15, page 14, and used
with
the regular finder on
the
lens
or
the adapter.
Exposure
CAMERA
SPEED:
FIXED
AT
16
SHUTTER:
OPEN
THE
density
of
the finished
fi
lm depends upon the exposure given
as
it
runs
through
the camera. Too much exposure produces a picture
that
is
too
light;
insufficient exposure gives a picture
that
is
too dark.
DIAPHRAGM
DIAPHRAGM
POINTER
EXPOSURE
GUIDE
Exposure can
be
varied
either
by changing
the
camera speed,
or
the
shutter
opening, or by altering the size
of
the
diaphragm
in
the
lens.
SPEED and SHUTTER control the duration
of
exposure,
while
the
DIAPHR
AGM
controls the brightness
of
the image on the film.
With
the camera SPEED
DIAL
at
16, and
the
SHUTTER LEVER
at
OPEN, the exposure is
of
standard duration. This simplifies exposure,
25
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