, . /
-e-
/1"
~~
3. Measuring the Brightness
of
Landscapes
For
this, the camera lens should be aimed at
a
point
midway between the horizon and one's
own feet.
If
the horizon
is
not clear, the lens
should be aimed
at
the ground
about
150 f
eet
(50
meters) in front. Because
if
the bright light
from the sky directly enters the camera the
measurement could cause under-exposure to
the landscape. However, there are exceptions,
such
as
when
the
sky forms an
important
part
of
the picture, in which case the camera must
be held level for measuring, and
if
it
is
a wide
landscap
e,
the exposure well have
to
be reduced
to
one-half, or
if
the
contrast is
too
strong, it
may be necessary to increase by two times.
"'/
-e-
/ I
~""
4. Special Method
of
Measuring
If
it
is
inconvenient to bring the
meter
close
to
the subject's face
or
in snapshots and animal
shots,
it
is possible
to
get fairly accurate
measurements by setting up a standard reflec-
tor
of
18
% reflection (Gray card) ratio in the
same condition
as
the
subject and measuring
the
reflected light. In this case,
the
exposure
measurement would be
the
same
as
that
of
incident light.
When the subject
is
very dark
and
the
meter
needle fails to move, measure the brightness
of
the light source directly and give a 10
to
20
times increased exposure
to
get well-exposed
pictures.
29
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