Canon Speedlite 600EX-RT - Manual (Page 51)

49
' Radio Transmission Wireless Flash Shooting
You can divide the slave units into two or three groups and perform
E-TTL II/E-TTL autoflash shooting while changing the flash ratio
(factor). In addition, you can set and shoot with a different flash mode
for each firing group, for up to 5 groups.
Autoflash Shooting with Two Slave Groups
(p.61)
Autoflash Shooting with Three Slave Groups
(p.62)
Wireless Multiple Flash Shooting
A
B
A
B
C
COP
Y