COMPENSATION OF EXPOSURE Due to special lighting conditions, or
in
situations
of
high contrast such
as
occur
in
repro-copying,
it
may not
be
desirable to take the picture
as
is.
The
amount
of
exposure
the
film re ceives
is
determined
by a
combination
of
the
lens
aperture
and
the
shutter
speed.
Since
the
two
are
interrelated,
different
combina·
tions
will give
the
same
amount
of
expos
ur
e.
The
best
combination
depends
on
the
results
desired
. Use fast
shutter
speeds
to
freeze
motion
or
slow
ones
to
create
deliberate
blur
.
Sm
a
ll
apertures
give
greater
depth
of
field; large
ones
let
the
subject
stand
out
against
an
out
-
of
-
focus
background.
)
ust
as with
automatic
operation,
care
must
be
taken
to
be
sure
the
ASA/f-stop/shutter
speed
combinations
are
within
the
EV
range
of
the
meter
.
To compensate exposures, the following three
methods are used:
1. Compensation by manual exposure control
{M
a
nu
al override)
I
f you want deliberate underexposure or over-
44
exposure, reset the green needle to a numb
er
higher or lower than the number indicated
by
the black needle
in
the shutter-speed
sc
ale.
2. Resetting the
ASA
dial
temporarily
The picture
is
taken after resetting the
ASA
dial
by the amount
of
compensation, with other
factors left unchanged.
For
instance,
when
a film
of
ASA
100
is used:
And
a
compe
nsation
by
one
stop
increase is
desired,
adjust
the
index
to
50.
And
a
compensation
by
one
and
1/3
stops
decrease
is
desired,
adjust
the
index
to
the
dot
following
200.
Remember to return the
ASA
dial to its original
position upon comp letion
of
picture-taking
under the adjusted setting.
3.
Using
the exposure memory lock
When
there are severe brightness differences b
e-
tween the subject and the background, you
will
often obta
in
better results using the
ELW's
center-weighted
me-
tering system and
memory lock, which
is
integrated into the
se
lf-t
im
er.