Canon Speedlite Transmitter ST-E3-RT Manual

Page of 220
18
' Wireless Flash Shooting
  Shooting with a Different Flash Mode set for Each Group 
(p.38)
A
B
C
E
D
Manual flash
Manual flash
Auto external
flash metering
E-TTL II
Manual flash
* The flash mode settings are 
indicated only as an example.
Ceiling
COP
Y