Canon Speedlite Transmitter ST-E3-RT Manual

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40
Clearing Transmitter Settings/Test Flash from a Slave Unit
5
Take the picture.
X
Each slave unit fires in the flash mode 
that was set for each group.
You can return the settings for wireless shooting to their default 
settings.
Press function buttons 2 and 3 
simultaneously for 2 seconds or 
longer.
X
The transmitter settings are cleared 
and the shooting mode returns to 
<
a> flash mode.
You can fire a test flash from a flash set as a slave unit. For the 
operations, see the flash’s instruction manual.
Clearing Transmitter Settings 
When the flash mode of the firing group is set to <
a> or </>, 
exposure is controlled to obtain a standard exposure for the main subject as 
a single group. If you shoot with multiple firing groups pointing toward the 
main subject, overexposure may result.
The firing groups to be fired do not need to be consecutive; for example, A/
C/E can be set.
Test Flash from a Slave Unit  
Even when the settings are cleared, the transmission channel, the wireless 
radio ID and the C.Fn and P.Fn settings (p.54) are not canceled.
When two or more units are set to master, the master unit with the <
D> 
lamp lit in green is the one that fires.
COP
Y