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The
shutter speed and
lens
opening
(coupled by
the exposure-value setting) can
now
be read
oppo-
site
the
white
dot
I~DEX.
For
example: with
an
exposure value of
12 the
camera
may be
set
for a
combination of
lens
opening
f
/8
and 1/60 second.
Suppose this combination
is not
suitable
for
your
subject because you
need
a faster shutter speed,
such as
1/5
00
second,
for
a sports shot.
In that
case,
turn the
shutter speed ring, from
1/60 to
1/500
second.
This
automatically adjusts
the lens
opening to
f
/
2.8
and
thus
compensates
for the
faster shutter speed
time.
On the other hand,
if
you intend to take a
picture
which calls for good depth of
field, for
example,
needing a
len
s
opening
such
as
fl
16,
you
must
rotate the speed ring
in
the same
manner until the
figure 16
on the
LENS OPENING
SCALE
is
opposite
the white dot index. This changes the shutter speed
to
1
/
15 second.
Such an exposure
should, however,
only be
made
from a
firm
support, for
there is risk
of camera movement at exposure times of
1/30
second or
longer.
10
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