Canon EOS Rebel T6s EF-S 18-135mm IS STM Lens Kit 手册

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页码 430
189
The camera’s built-in flash can work as a master unit for Canon EX-
series, external Speedlites having a wireless slave feature. It can 
wirelessly trigger the Speedlite(s) to fire via optical transmission.
Be sure to read the instructions and cautions about wireless flash 
photography (optical transmission) in the Speedlite’s instruction 
manual.
Regarding your Speedlite (slave unit), refer to its instruction manual and 
set it as follows. The settings other than the ones below for the slave 
unit’s control are all set with the camera. Different types of Speedlite 
slave units can be used and controlled together.
(1) Set the external Speedlite as a slave unit.
(2) Set the Speedlite’s transmission channel to the same channel 
as set on the camera.
*1
(3) For flash ratio control (p.197), set the slave unit’s firing group.
(4) Position the camera and slave unit(s) within the range shown 
below.
(5) Face the slave unit’s wireless sensor toward the camera.
*2
Using Wireless FlashK
Slave Unit Settings and Position
Example of Wireless Flash Set-up
Indoors
Outdoors
Approx. 10 m/32.8 ft.
Approx. 7 m/23.0 ft.
Approx. 80°
Approx. 5 m/
16.4 ft.
Approx. 7 m/
23.0 ft.