Canon Speedlite Transmitter ST-E2 Instruction manual - Page 13

Wireless Multi-Flash E-'lTL Autoflash Operation (1) Setting the Slave ID With the wireless control of multiple slaves, you can set the flash ratio and specify the main flash and fill flash by assigning a slave ID. There are three IDS:A, B, and C. The ST-E2 can control slaves A and B. When the flash ratio con- trol lamp is lit, the C slave does not fire. Set the slave ID to A for the slave on the left of the camera. and to B for the slave on the right of the camera. 0 If the slave's ID is set to C, it cannot he controlled by thc STE2. Be sure to set the slave ID 7rn5s to A or B. There is no limit a s to the number of slaves t h a t can be used. S e t t h e slave ID for all the slaves to either A or B. Press t h e slave's < SEL/SET > button to select < > . 2 + Press the < > or < - > button to set the slave ID to . 3 Press the < SELISET > button to register the slave ID. (The slave ID stops blinking and stays on.) About Slave Group Control All slaves s e t to the same ID a r e controlled a s one group. Shown below is a g r o u p of t h r e e slaves whose ID is A. They will be controlled as a single slave group A. 4 Follow the same procedure for the other slave to set the slave ID to .