Flash - Canon Speedlite 550EX Instructions Manual

[51 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 just triggers the
slave unit which fires according to its own independent (manual or
stroboscopic flash) setting . This feature can be used in the following
situations:
(1) As with studio flash, you can sellhe slave unit's flash output yourself for
wireless manual flash photography.
(2) For wireless manual flash photography with Wi reless Transmitter ST-E.
1.
Selling Manual Flash With a Slave Unit
74
On a slave unit with the wireless selector
to
< SLAVE >,
press the < MODE >
button for at least 2 sec.
M will start blinking.
It
will continue to
blink while the slave unit's independent
setting is in effect.
To set the flash output, see page 44.
l:II
To determine the pl"Oper flash
e~posu,e.
use a haod·held
nash
meter • .