Canon EOS Rebel T5i 18-55mm IS STM Lens Kit 手册

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页码 388
237
Custom Wireless Flash Shooting
The built-in flash can also be added to wireless flash shooting explained 
on pages 235-236.
The basic settings are shown below. By changing the [Firing group
setting, you can shoot with various wireless flash setups of multiple 
Speedlites complemented with the built-in flash.
1
Basic settings:
Flash mode
: E-TTL II
E-TTL II meter. : Evaluative
Wireless func. : [
0+3]
Channel
: (Same as slave units)
2
Select [Firing group].
 
Select the firing group, then set the 
flash ratio, flash exposure 
compensation, and other necessary 
settings before shooting.
Fully Automatic Shooting with the Built-in Flash and 
Multiple External Speedlites
A
B
[1 (A:B) 2]
[1All and 2]