Canon 550ex - Wireless Flash Photography

For Type-A
Cameras
Wireless Flash Photography
This
section covers
wireless flash
photography
with
the 550EX.
lt
explains the
550EX's built-in
master
and slave
flash features.
550EX
Wireless
Flash Features
.
A
wireless flash
system
with multiple
Speedlite 550EXs can be used as
easily as a srngle, on-camera Speedlite 550EX.
.
Up to three
550EXs
or
three
groups
of
550EXs
can be set as slave units
for
automatic control.
.
550EXs set as slave units can be
positioned
to obtain the desired
lighting
effects.
All
of their settings are controlled by the
master
unit and camera.
[1]
Wireless
System Setup and
Testing
(page
52)
[2]
Wireless E-TTL Autoflash
(page
60)
[3]
Wireless Manual Flash
(page
71)
[4]
Wireless
Stroboscopic
Flash
(page
73)
[5]
Manual
or Stroboscopic
Flash
With
a Slave Unit
(page74)
l-_+l
.
This
section
assumes that
the Speedlite
550EX is used with
the
EOS-3.
lJl
.
Before
proceeding,
first
turn
on the
main
switch on the
EOS-3
and 550EX
.
In
these
Instructions,
a Speedlite 550EX
whose wireless
selector
has
been set to
MASTER
is
called the
"master
unit" and a 550EX
whose
wireless
selector
has been
set to
SLAVE
is
called a
"slave
unit
"
.
For EOS-3
operations,
refer
to the
EOS-3 Instructions
.
With
the
EOS Elan
ll-llE/50'50E,
EOS
Rebel
G/500N,
EOS lX,
and
EOS lX Lite/|X7,
only one slave
group
can be used
for wireless E-TTL
autoflash control
.
Quick
flash
cannot be used
with wireless flash
photography
51