Function - Minolta Flash meter IV Instruction Manual

LIGHTING RATIO CALCULATIONS
The
meter's
memory
function
lets
you
check
the
lighting
ratio
(relative brightness)
of
various
light
sources.
By controlling the lighting ratio, you
can
vary the amount
of
shadow
detail
in
a
photograph.
For example, lighting ratios
f
rom 2:1
through
4:1
produce lighter
shadows
which
are desirable
in
color
portraits.
Whereas
lighting ratios
of
6:
1 and
higher
produce much
deeper shadows
and are often
used
in
dramatic black-and-white portraits.
1.
Attach
the
optional
flat diffuser.
tr
Z.
Set
switches
on
left
TRAST",
"ExlN",
"NORM
3.
Set the
measuring
mode to
"AM
B
l"
"CORD", or
"
NON.C".
4. Set the
function
switch
to "T
lM
E
".
side
of
meter
to
"CON
",
and
"SINGLE".
'
Ji
ry
#t
#
REuAr-u
E
rA
l-Hlil
VryI
-
o
Any shutter
speed
can be used.
In
average
illumina-
tion,
a
speed
around 1160 sec. should produce
acceptable
resu
lts.
Use a
f
aster
speed
in very bright
light,
and a
slower
speed
in low light.
o
Shield
the diffuser
from other light
sources
with
your
hand
to
their light from
striking the
flat
diffuser
and
affecting the
reading.
5.
Hold the meter next
to
the
subject so
that
the
diffuser's surface
is
per-
pendicu
lar to the
main
light
sou
rce, then
press
the
measuring
button to
take
a reading.
6.
Press
the
memory
button
to
store
the
read-
i
ng.
7.
Repeat
steps 5 and
6
to
ta
ke
a
read
ing
of
the
other light
sou
rce.
tta
-4.-34. -2 . -1 . 0 . 1 . 2".
3.U.
rtuL/'
n
a, AMBI
LtLt |
_.
'r"
r,r
l.i
Ll
I
''
ExlN.
[
,
rlv
],,.,,1
ii
ll
I
p
RECALL
f**
I
cv
I rso
I
FNo.
I
<r
<b
o
The pointers on the contrast
scale
will
indicate
the
difference
in
illumination
with
quarter-stop
accu
racy.
llt
-4.-3s. -2 . -'l . 0 . ,l . 2^.
3.4
.
JtlA' E n
Lf
L,
r
AMBI
,-;;-\
7.';l
Ll I \
ErlN.
39