EXPOSURE
OPERATION
To obtain accurate exposure: fir
st
align
the
film-speed setting line (engraved
on
the
Inner Dial)
to
coincide
with
the small
black
dot
engraved beneath the selected
film
-
speed rating
(ASA
or
DIN). Next,
point
the camera lens
to
the
subject and ensure
that
fingers
do
not
obscure
the
photo
-electric
window
(mounted
above the lens). Note the
position
at
which
the needle comes to rest.
Now,
rotate the knurled Outer (shutter
speed)
Dial until the small 'zero' index is bisected
by
th
e stationary meter-needle
(located in the curved
window)
. The meter is
now
primed
for
any seiection
of
coincident
reading
of
aperture and shutter speed. Finally, align the red
dot
on
the
Helios lens
with
the
se
lected apertur
e:
point
the camera at subject, rotate the focusing ring
until
sharp
image-resolution is obtained, turn the pre-set diaphragm ring
clockwise
to
its
fullest
extent-
depress the release
button
to obtain perfect exposure.
15
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