Optical Transmission Wireless Flash Shooting

Using a Canon Speedlite (receiver) with an optical transmission wireless shooting function, you can easily perform wireless multiple flash shooting in the same way as normal E-TTL II / E-TTL autoflash strobe photography.

The system is designed so that the settings of the EL-1 (Ver.2) (sender) are automatically applied to wirelessly controlled Speedlites (receivers). This eliminates the need to operate receivers during shooting.

Positioning and Range

  • Autoflash with one receiver ()

    (1) Indoors

    (2) Outdoors

    (3) SENDER

    (4) About 80°

    (5) Transmission range

    (6) About 8 m / 26.2 ft.

    (7) About 12 m / 39.4 ft.

    (8) About 10 m / 32.8 ft.

    (9) About 15 m / 49.2 ft.

  • Autoflash with groups of receivers (, )

    E-TTL II / E-TTL autoflash photography is possible with two or three receiver groups, and the flash ratio (proportion of flash output) can be adjusted as needed.

    (1) 2 groups (A, B)

    (2) 3 groups (A, B, C)

    Caution

    • Aiming the units in firing group C directly at subjects may cause overexposure.
    • Take a few test shots in advance, and test flash firing ().
    • To avoid interfering with transmission, do not place any obstacles between the sender unit and receiver unit.

    Note

    • Using the mini stand provided with the receiver unit, position the receiver of the receiver unit towards the sender unit.
    • When shooting indoors, the transmission may be reflected off the wall, which may cause the camera to be activated even when the layout is still preliminary.

Group Control

Firing group A

You can add receivers when more light or sophisticated lighting is needed. For added receivers, simply specify the firing group (A, B, or C) that you want to be brighter. There is no restriction on the number of units.

For example, when three receivers are set to firing group A, they are all controlled as a single, high-output Speedlite in group A.

Caution

  • To fire the three groups of A, B, and C, set to A:B C. Group C does not fire when Speedlites are set to A:B.
  • Aiming the units in firing group C directly at subjects may cause overexposure.
  • With certain EOS film cameras that support E-TTL autoflash, you cannot perform wireless multiple flash shooting with a flash ratio setting.

Note

  • Flash ratios from 8:1 to 1:1 to 1:8 correspond to 3:1 to 1:1 to 1:3 (in 1/2-stop increments) as converted to number of stops.