Canon 550ex - Page 7

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the slavg
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With multiple
slave units, a slave
lD
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
lDs
are
available:
A, B,
and C.
ETTL El
zoom
f
Yrt
\\
|
/.
1
To
set a slave unit's slave
lD,
press
'
the
<
SEL
/SET
>
button and select
tfliva.
'
Pressing
the
<
SEL/SET
>
button changes
the selection
in
the
following loop:
.r
Press
the
<+>
or
Z
the slave
lD
(A,
B,
or C).
tt
Press
the
<
SEL/SET
>
button.
J.
The
GruNEr
icon
and slave
lD will
be
displayed.
t=l
lf
you
want
all
the slave units to
fire
at the same
flash
output,
you
need not
assign a slave
l{J
ID.
="-
q
lat
-aF
.
56
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