Canon Speedlite 550EX Instructions Manual page 103

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4. Setting the Slave 10
With multiple slave units, a slave 10 can be assigned
to
distinguish a slave
unit
as
being
the main flash or fill flash.
A flash
ratio can thereby be
set.
Three
slave
IDs
are available: A,
8, and
C.
TTL
mZoom
~~mi
....
..-
"
"~~
A
­
=~
'1
/
,
.:::...--
I
I
\
To set a slave unit's slave
1
0, press
the <
SElISET
> button and select
-.
Pressing the <
SELISET
> button changes
the
selection in the following loop:
r--ID-----~
-
(Off) ~.t-----~
2
Press
the
<
+
> or
<
-:>
button to set
the slave 10 (A, B, or
C).
Press
the
<
SEL
/
SET
>
button.
The
~
icon
and slave
ID
will be
displayed.
If
you want
all
the slave
units
to
lire
at
the
same flash output,
you
need
oot assign a
slavII
ID.
1D3

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