Canon Speedlite 550EX Instructions Manual page 110

110
[4] Manual or Stroboscopic Flash With a Slave Unit
Manual flash or stroboscopic flash can be set manually with a slave unit. The
selling is independent from the master unit. The master unit jusllriggers the
slave unit wh ich fires according to its own independent (manual or
stroboscopic flash) selling. This feature can be used in the following
situations:
(1) As with studio flash, you can set the slave unit's flash output yourself for
wireless manual flash photography.
(2) For wireless manual flash photography with Wireless Transmitter ST·E.
1. Manual Flash With a Slave Unit
(:JZoom 2'{mm
On a slave unit with the wireless selector
I k -
1/
:6
sello < SLAVE >, press the
<MODE >
I
r-~~~
':L:'i ~-
button fo r alleast 2 sec.
M will start blinking.
It
will continue to
'-~
blink while the slave unit's independent
91«hJ'©©
selling is in effect.
P T
n-
j
0 , 1 , ..
To set the flash output, see page 93,
EiI
To determioo the proper llash exposure, use a hand·held Hash meter.