Exposure Adjustment - Minolta Flash meter IV Instruction Manual

EXPOSURE ADJUSTMENT
After taking an
incident-light
measurement,
you
may
want
to
adjust the meter's indicated
exposure
to
compensate
for
f
ilter
factors,
bellows-extension
factors,
etc.
Listed below are some
typical
situations
where exposure adjustment
shou
ld
be used.
o
Scenes
with
mostly lighter tones:
Decrease
expo-
sure
by 0.3
to
1.0 stop.
o
Scenes
with
mostly darker tones:
Increase expo-
sure
by
0.3
to
0.5 stop.
o
Filter factors:
Polarizing
filters
require
a
2-stop
increase
in
exposu
re,
f
or
example.
o
Bellows-extensions
f
actors: When
the
magnif ica-
tion
is
1
12
life-size,
a 1-stop
increase
in exposure
is
require,
for
example.
o
When using
the
Minolta Booster, Booster
II,
or
Sinar
Booster 'l
f
or highlight
or
shadow readings.
(See note in the next column.)
To
set
the exposure-adjustment
value:
To
decrease exposure:
Hold down
the
"Ht'
key and move the
upl
down control
upward
until the
desired
change
is
indicated.
o
The
exposure increase
can
be set
from 0 to
+4.0
stops
in tenth-stop
increments.
o
The pointer
on the
contrast
scale
moves
to
the
right
as
the
exposure is increased.
To
increase
ex
posu
re
:
Hold down the
"S"
key
and move
the
up/
down control
upward
until the
desired
change
is
ind
icated.
The
exposure decrease
can be
set
from 0
to -4.0
stops in tenth-stop increments.
The pointer
on the contrast
scale moves
to the left
as
the
exposure is decreased.
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To
use
the
exposure-adjustment setting:
Bef
ore
ta
k
i
ng
a
meas-
u
rement,
press the
mem-
ory-clear button
to
clear
any previous
readings
from the memory.
Then
take an
incident-light
reading
in the
usual way,
and press the
"H"
key to
calculate
an
exposure
in-
crease
, or
press the "S"
key
to
calculate
an
expo-
su
re
decrease.
I
n
the
exam
p
le, the
exposu
re
was
increased
2
stops
to
compensate
for a polariz-
ing
filter.
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To
cancel
an
exposure-adjustment setting:
Hold down the
appropriate key ("H
"
or
"S"),
and
move
the
up/down control downward
until
the
pointer on the contrast
scale
returns
to 'tO" position.
o
Exposure-adjustment values remain set
until
the
battery
is removed.
NOTE
When using
the Minolta
Booster,
Booster
II,
or
Sinar
Booster
1
,
the
spherical
diffuser must
be attach-
ed
to
the receptor
head.
To
make
highlight or
shadow
calculations
with the
Minolta Booster, Booster II,
or
Sinar Booster
1,
we
recommend that the highlight
va
lue
be
set
to the
'
'H'
'
mark (+2.3
stops
)
and
the
shadow value
to
the
"S"
mark
l-2,1
stops)
on
the
contrast
scale.
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33