Minolta Auto Meter IV F - Page 26

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Etl
FE
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lf this
brightness range is
within
the exposure range
of
your
film,
press
the
average button
to obtain
an exposure
reading
which
will reproduce
detail
in
both
of
the
areas
you
measured.
Of course if the
brightness range
is
smaller than the
exposure
range,
then
you
may
have
detail in
areas darker and lighter
than
those
you
measured.
Adjust
your
exposure,
devel-
opment, and/or reproduction
variables
to
obtain the
results
you
want.
lf, however,
the
brightness range
is
greater
than the film's
exposure range,you
will
have
to adjust
one or all
of
the
variables
listed
above,
change the lighting
conditions if
you
have
control over them,
or
you
may
have to
settle
for
a
loss
of
detail
in the highlights
and/or
shadows.
ln the
second
case,
it
may
be
useful
to
take
a
reflected
reading
of a
grey
card
(zone
5).
You will
then be
able
to
see
the
position
of
your
highlight
and shadow readings
and
calculated
average value with
respect
to the
meter
reading
of
a standard midtone.
Remember,
when
you
take
a
reflected-
light
reading,
the
exposure
provided
by the meter will make
the area
you
read
appear
as a
Zone
5
after
normal
developm
ent.
FI LTER.FACTOR
CORRECTION
When
you
place
filters over
the camera
lens,
you
will have to
increase the exposure
which
is indicated
by
the
Auto Meter lV
F. Calculating
this
increase and adding
it
to the
meter reading
can
be a
laborious
procedure
if
you
are
making more than
one
exposure
at different
shutter speed
and aperture settings
or
if
you
are using
several
filters
simultaneously.
With the
Auto Meter
lV F's wide
ISO range,you
can
add the
filter
factor
directly
to
the film speed setting so
that the
meter
will
automatically
compensate
for the
light
absorbed
by the
f ilters and display
the correct
exposu
re.
1. First, determine
the filter factor of each
filter
you
will
be using.
.
This
is
generally
expressed
in
1/3-stops
on
the filter,
in its
accompanying
technical
literature,
or on
the outside of
the
f ilter
packaging.
2.lt
you
are using
more than one
filter, add all
the
factors
together to obtain
a correction
factor for the
entire
filter
pack.
3.
Decrease the
meter's
film
speed
by this
number of stops.
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