Canon Speedlite 430EX III-RT Instruction Manual - Page 73

Wireless Settings, Set the same channel for both the master unit and slave, unit.

Page 73 highlights

Wireless Settings Turn transmission wireless sensor (p.10) of the slave unit toward the master, using the bounce function (p.28). When shooting indoors, since the transmission signal is reflected off the walls, operation may be possible even with slightly imprecise positioning. Wireless Settings To perform flash shooting using the optical transmission wireless slave function, configure the settings as follows. Slave Unit Setting Set to . Operate and set the flash you want to set as the slave unit. Press the button of the cross keys. Turn to select , then press . To perform normal flash shooting, select to clear the wireless (slave) settings. Transmission Channel Setting To avoid interference with optical transmission wireless flash systems used by other photographers, you can change the transmission channel. Set the same channel for both the master unit and slave unit. Set a channel. Press . Turn to select the channel symbol, then press . 73

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73
Wireless Settings
To perform flash shooting using the optical transmission wireless slave
function, configure the settings as follows.
Set to <
:x
>.
Operate and set the flash you want to
set as the slave unit.
Press the <
I
> button of the <
S
>
cross keys.
Turn <
9
> to select <
:x
>,
then press <
8
>.
To avoid interference with optical transmission wireless flash systems
used by other photographers, you can change the transmission
channel.
Set the same channel for both the master unit and slave
unit.
Set a channel.
Press <
8
>.
Turn <
9
> to select the channel
symbol, then press <
8
>.
Wireless Settings
Slave Unit Setting
Turn transmission wireless sensor (p.10) of the slave unit toward the
master, using the bounce function (p.28).
When shooting indoors, since the transmission signal is reflected off the
walls, operation may be possible even with slightly imprecise positioning.
Transmission Channel Setting
To perform normal flash shooting, select <
F
> to clear the wireless
(slave) settings.