Canon Speedlite 550EX Instructions Manual page 104

5. Master Flash ON/OFF
The master unit's flash firing can be enabled (ON) or disabled (OFF).
1 04
(1)
~"l ("'"
a,., )
This selling enables the master unit to fire a flash.
• Th is setting Is ca ll ed "Masler 1 1 ash ON."
• Th is setting automatically sets the master unll's slave 10 to A.
(2) "1 ( ""i, 0 F F ) : This selling (Masler flash OFF) prevents the master unit
from firing a flash.
It
can stililransmit wireless signals to
trigger the slave units.
TTL Il'J ZQQ)n I ?-"m
~F-
..,J;"I. \
I \'"
'&
9(g)©:gt,©
n
n '
I ,""
1
Press the <
SELISET
> bullon and
select ""\ .
o
Pressing the
<
SEl/SET
>
bullon changes
the sele<:lion in the lollowirlg loop:
r llB -+"-+ ~ -+ ~ -+ ~ "l J
- (011)
.~ t-------'
2
Press the < +:> or
< -
> button to set
ellher an or 0 FF.
3
Press the
<
SELlSET :> button.
• . ., Of .,
will
appear.
• 11 master flash OFF is set, '-z. will blink.