Autoflash with Three Receiver Groups

Once firing groups A and B have been set up, you can fire with multiple Speedlites by adding group C. For an overview of flash control, see Group Control.

Group C is useful when you want to eliminate shadows in the background behind subjects.

  1. Press Select/Set.

  2. Select the option shown in (1).

    • Turn the Select dial dial to select an option, then press Select/Set.

  3. Set to A:B C.

    • Turn the Select dial dial to select A:B C, then press Select/Set.

  4. Add Speedlites to firing group A, B, or C and position them.

    • Confirm that all receivers and the sender are set to the same transmission channel and wireless radio ID.
    • Set up receivers for group A, B, or C and position them.

  5. Check the channel and ID.

    • Set the same transmission channel and wireless radio ID on senders and receivers, if they are different ().

  6. Set the A:B flash ratio.

    • Press Select/Set to select the option shown in the figure.
    • Turn the Select dial dial to select the A:B flash ratio, then press Select/Set.

  7. Set the flash exposure compensation amount for firing group C.

    • Press Select/Set to select the option shown in the figure.
    • Turn the Select dial dial to select an exposure compensation amount, then press Select/Set.

  8. Check the connection and make sure the flash units are charged.

    • Confirm that the LINK lamp is lit in green.
    • Confirm that the sender and receiver flash-ready lamps are lit.
    • Make sure Sender wireless not connected is not displayed on the sender LCD panel.
    • Confirm that the Receiver fully charged icon indicating completion of sender/receiver charging appears on the sender LCD panel (CHARGE is not displayed).
    • For details on sender LCD panel illumination, see LCD Panel Illumination.

  9. Check operation.

    • Press the test flash button on the sender.
    • The Speedlites fire. If they do not fire, confirm that they are within transmission range ().

  10. Take the picture.

    • Just as in normal flash photography, shoot after configuring the camera.

Caution

  • Radio transmission is not possible when Sender wireless not connected is displayed on the LCD panel. Double-check the transmission channels and wireless radio IDs of senders and receivers. If you cannot connect with the same settings, restart the senders and receivers.
  • Aiming the units in firing group C directly at the main subject may cause overexposure.

Note

  • You can fire the modeling flash by pressing the camera's depth-of-field preview button ().
  • Auto power off takes effect in approx. 5 min. when the Speedlite is set as a sender.
  • To turn on a receiver that is in auto power off mode, press the sender test flash button.
  • Test flash firing is not available while a camera's flash timer or similar functions are active.