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EXPOSURE MEASUREMENT
-
continued
Eyepiece Shutter Operation
The
camera 's
Photomic
finder is fitted with an eyepiece
shutter
for
special
unmanned shooting
situations
(e.g.,
remote control,
automated shooting
with motor
drive
and
aperture control
unit)
requiring
protection
against
the
entry of stray
light through the viewfinder
eyepiece.
To
close
the
shutter, simply
turn
the eyepiece shutter
control 60"
clockwise;
as the shutter
closes,
the internal
LEDs
are
deactivated
and
the
external "correct
exposure"
indicator is
switched
on
for
metering
operation
from
atop
the
finder. To set the
camera for
proper
exposure
using the
external
LED indicator,
simply adjust the aper-
ture
ring and/or
the
shutter-speed selector
until the LED
just
glows; once
the LED comes
on, the camera is
set
for
correct exposure
.
In addition
to its use for low-light metering
or for
un-
manned photography, the
eyepiece
shutter
comes
in
handy
to ensure correct exposure
measurement
in criti-
cal
shooting situations
(e.g., photomicrography)
or
for
protection
against
the entry
of
bright light into the view-
finder during
daylight shooting.
26
High-Contrast Lighting Situations
When
there are
substantial brightness differences be-
tween
the
main subject and the background, unimpor-
tant bright
spots or
dark
spots
can
adversely
influence
the finder
reading,
and
thus
the
final
exposure.
To pre-
vent under-
or
overexposure
of
the main subject under
these
shooting conditions, some corrective action
must
be
taken
to
ensure
proper
exposure of
the main subject.
Fortunately,
the
finder's center-weighted TTL metering
action simplifies adjustments,
making for qu icker
camera
operation and
more
accurate final
results.
To compensate for
an excessively
bright
or
dark' back-
ground,
target
the
main subject
in the
center
of
the fo-
cusing
screen
while performing metering; this
action en-
sures that
the main
emphasis of
the meter reading will
be
on the
chosen
subject.
Then,
after
completing
aper-
ture and shutter
speed
adjustments,
recompose to the
desired picture
composition and
make
the exposure
w
ithout readjusting the camera controls. For example,
when
shooting
landscapes, it is
often advisable
to
aim
the
camera slightly
downward during
exposure
measure-
ment to
eliminate
the
effects of a
bright expanse
of sky;
without
such compensation,
the landscape may
appear
underexposed in the
final
print. Also, for backlit
sub-
jects, it may be necessary to move
closer
to the
subject
to en
su
re a proper read
ing.
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