Minolta Flash meter IV - Page 16

GUIDE
VALUE
DISPLAY
The Guide
Value
("GV")
number indicates
how
the
f lash
power
should
be adjusted
for
correct expo-
sure
without
changing the
f-number
setting.
Guide
Value
control
in
aperture-priority
("FNo.")
mode:
To
get
correct ex-
posure
at
f/5.6
and
1/60
sec.,
"*1
GV"
indicates
that
the
flash
power
Guide
Value
control
in
shutter-priority
("TlME")
mode:
After taking the
reading, move function switch
from
"TlME"
to
"GV".
Move
the
up/down
control
to
change
the
"GV"
number. This results in
a
corre-
sponding
change
in
the
f-number
setting.
-4.-3s.
-2
.
-1
.
0
.
I
.
28.
3.4
%
EfLf
.*,
L- tr
-.coRD
tso
7
4
\.
I
u'
-7.n
il
LI' \
In
this
example, the
upl
down
control
was
used
to
change the
f-number
from
t15.6
to
5.6
+
0.6.
The
"GV"
correspondingly
changed
from
0
to
+1
.
"+1
GV"
indi-
cates
that the
flash
power
must
be
increased by one
stop
(dou
bled)
for
correct
exposu
re
at
t
15.6
+
0.6
stop.
-4.-3s. -2
.
-1
.
0
.
I
.
2H.
3.4
t".|.
,- t-,
ri|o
ft t-f
,,
_
t' f-
coRD
-JT__r,iiel1.fi
ft
i
-4.-3sa -2
.
-1
.
0
.
1
.
28. 3.4
**
,- ,-,
*t
flli_
+
,_
F-
tr
-
coRD
""
[_i_l
__\'ioJ,f,
E,
shou
ld
be increased
by
one
distance between
the
flash
creased
by a
factor
of
1
11.4.
stop
(dou
b
led
)
or
the
and
su
bject ca
n
be de-
to
114
power)
or
the
and
subject
can be
For
correct
exposu
re
at
t15.6
and
1160
sec.,
"-2
GV"
indicates
that
the
f lash
power
shou
ld
be
decreased
two
stops
distance between the
dou bled.
-4.-3s.
-2
o
-1
.
0
r
1
.
2H. 3.4
t-.
, r-,
tlt
tf
t-t
""-
-L-'nu
7.n [i
Er-t \
(set
flash
lf
you
cannot
change
the
flash
power
or the
flash-to-subject
distance,
adjust the
f-number
set-
ting
until
the
"GV"
number
is
set
to
tT"
(zero).
Make
the
exposure
at that
f-number
setting.
o
In
aperture-priority
("F
No.")
mode,
the
"GV"
number
is
displayed
in
full
stops.
lf
the measured
value falls
between the
f
u ll-stop
settings, the
difference
(from
0.1
to
0.9
stop)
will
be indicated
by
the
small
number
next
to the
digital
f-number.
Relationship
between
GV,
flash
power,
and
flash-to-subject distance.
':o
coRo
.
O
.
1
.
2^.
@
rttl
Liev
I lLi
-4o-3s
.
-2
.,
,r",
tr n
LI LI
fso
f_
L,
L'I
GV
number
-8
-7
-6 -5
-4
-3
-2
-1
0
+1
+2
+3 +4 +5 +6
+7 +8
F las h
power
11256x
1
1128x
1164x
1132x
1
/16x
1l9x 1l4x
1l2x
1x
2x
4x
8x
16x
32x 64x
128x 256x
F lash-to-sub-
ject
distance
16x
11.3x
8x 5.7x
4x
2.Bx
2x
1.4x
1x 1
l1
.4x
1l2x 1l2.Bx
1
l4x
115.7x
l
l9x
1
111
.3x
1
l16x
13