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2.
Increase
the exposure-value
number by one-
half
(for example,
from
8
to
between 8 and
9)
, if
the
difference in brightness between
the principal subject and
background
is mod-
erate,
and one full exposure-value
number
if
the difference is
considerable.
If the principal
subject
is dark
compared
to
the
background, follow the
same general procedure
-
Take a close-up
reading
of the subject-or decr
ease
the exposure value by one-half or one full
number
depending
upon the brightness
difference between
36
the principal
part
and background.
I
I
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