Canon MT-26EX-RT Macro Twin Lite - Manual (Page 58)

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Using a Canon Speedlite equipped with the radio transmission wireless
shooting function, you can easily perform wireless multiple flash
photography in the same way as normal E-TTL II/E-TTL autoflash
photography.
The system is designed so that the settings of MT-26EX-RT (master)
are automatically applied to the wirelessly controlled Speedlite (slave).
Therefore, you do not need to operate the slave unit during shooting.
Multiple Flash Photography with Slave C Added (p.69)
You can perform multiple flash shooting, using flash heads A and B
of the master unit and a slave unit set to firing group C (slave C).
Slave C is automatically controlled to obtain a standard exposure by
firing group C alone. Therefore, it can be used to eliminate shadows
on the subject or create an accent light.
' Radio Transmission Wireless
Multiple Flash Photography
Positioning and Operation Range
(Wireless multiple flash
shooting examples)
M
x
C
MT-26EX-RT
Transmission distance
Approx. 10 m / 32.8 ft.