Canon Speedlite 430EX III-RT Instruction Manual - Page 75
Fully Automatic Wireless Flash Shooting,
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a: Fully Automatic Wireless Flash Shooting This section describes basic fully automatic wireless shooting when using a device (master) equipped with the optical transmission wireless master function and a 430EX III-RT/430EX III set as a slave unit. For details on optical transmission wireless flash shooting and master unit operation procedure, refer to the instruction manual of the master device. 1 Set the master unit. Set the device with the master function as the optical transmission wireless master unit. 2 Set the slave unit. Set the 430EX III-RT/430EX III to be controlled wirelessly from the master unit as the slave unit (p.73). A, B, or C can be set as the firing group. 3 Set a channel. If the channels of the master unit and slave unit are different, set them to the same number (p.73). 4 Position the camera and the flash. Position them within the range shown on page 72. 5 Set the flash mode to . Set the flash mode of the master unit to . The slave unit is set automatically to during shooting by control from the master unit. Check that the firing group control is set to (no flash ratio control is set: _). 75