Canon 550 EX - Manual (Page 74)

[5] Manual or Stroboscopic Flash With a Slave Unit
Manual flash or stroboscopic flash can be set manually with a slave unit. The
setting 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 set the slave unit’s flash output yourself for
wireless manual flash photography.
(2) For wireless manual flash photography with Wireless Transmitter ST-E.
On a slave unit with the wireless selector
to <
>, press the < >
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.
74
1. Setting Manual Flash With a Slave Unit
To determine the proper flash exposure, use a hand-held flash meter.
05. F073-E (51~) 02.4.1 2:12 PM Page 74