Canon 580EX Speedlite 580EX Manual - Page 42

:2 . 1, Wireless, flash, Three, Slave, Groups, Set the, slave, units

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Page 42 highlights

a The flash ratio range of 8 :1 - i :1 - 1 :8 is equivalent to 3:1 - 1 :1 - i :3 in stops [112-slap increments] . a The flash rr31i0 at the 0 is shown in parentheses below the scale. 8~:7 ~. ~ 4:7 ~. 2 :1 rw ~ 1 :7 rr . 1 :2 rr~r~ . wiwi 1 :4 + ~rrrrr ~ 1 :8 {5 .6 :1} (2-8'1) [1-4 :5] (1 :1 .4) (t :2 .8) {1 :5 .6} Wireless flash with Three Slave Groups 15m (49 .2ft.) indoors ( H ~ iCm {32.831.] , ~ 8 )i2m (3s .ats .) Outdoors ----$C, JSm (2f .2it .) / You can have slave groups A and 8 and also add slave group C. You can use slave groups A and 8 to obtain the standard flash exposure of the subject, and slave group C to illuminate the background to eliminate shadows. Set the slave units. o See "Set the Slave Unit" on page 38 to set the save units ID to < A>, , Or < C>, 0 Far slave cC>, also set the flash exposure compensation-as necessary. 40

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a
The
flash
ratio
range
of
8
:1
-
i
:1
-
1
:8 is
equivalent
to
3
:1
-1
:1
- i :3 in
stops
[112-slap
increments]
.
a
The
flash
rr31i0
at
the
0
is
shown
in
parentheses
below
the
scale
.
8
:7
.
4
:7
.
2
:1
-
1
:7 . 1:2 . 1
:4
+ 1:8
~
~~~
rw
~
rr
rr~r~
wiwi
~rrrrr
~
{5.6
:1}
(2-8'1)
[1-4
:5]
(1 :1 .4)
(t:2
.8)
{1
:5
.6}
Wireless
flash
with
Three
Slave
Groups
15m
(49
.2ft.)
iCm
{32
.831
.]
,
indoors
(
H
~
~
8
)i2m
(3s
.ats
.)
Outdoors
JSm
(2f
.2it
.)
----$C,
/
You
can
have
slave
groups
A
and
8
and
also
add
slave
group
C
.
You can use
slave
groups
A
and
8
to
obtain
the
standard
flash
exposure
of
the
subject,
and
slave
group
C
to
illuminate
the
background
to
eliminate
shadows
.
Set the
slave
units
.
o
See
"Set
the
Slave
Unit"
on
page
38
to
set
the
save
units
ID
to
<
A
>,
<
B
>, Or
<
C
>,
0
Far
slave
cC>,
also
set
the
flash
exposure
compensation-as
necessary
.
40