Canon Speedlite Transmitter ST-E3-RT - Manual (Page 22)

20
To perform wireless shooting, set the transmitter (master unit) and flash
(slave unit) with the following procedure.
Check that <M> is
displayed.
Check that <M> is displayed
at the position shown in the figure.
Set a flash that is compatible with radio transmission wireless
flash shooting as the slave unit.
For the slave unit settings, see the flash’s instruction manual.
To avoid interference with wireless multiple flash systems using radio
transmission that are used by other photographers, or with other
devices that use radio waves (wireless), you can change the
transmission channel and wireless radio ID. Set the same channel
and ID for both the master unit and slave unit.
Wireless Settings
Master Unit Setting
Slave Unit Setting
Transmission Channel/Wireless Radio ID Settings
When establishing multiple radio transmission wireless flash systems,
interference between flash systems may occur, even if the flashes are set to
different channels. Set different radio transmission IDs for each channel
(p.21).
COP
Y