Canon 0585C006 Instruction Manual page 57

Autoflash Shooting Using Multiple Receiver Units
When the number of receiver units is increased or sender flash firing is
set to ON, automatic control is performed to fire all flashes at the same
flash output and to ensure that the total flash output results in the
standard exposure.
If any of the sender unit or receiver unit (firing group) is not fully charged,

<G> will be displayed on the sender unit's LCD panel. Make sure
to take the picture after checking the <G> icon is not displayed.
If the <D> lamp is red, radio transmission has not been established.

Check the transmission channels and wireless radio IDs of the sender
unit and receiver unit again. If you cannot connect with the same
settings, turn the sender unit and receiver unit off and on again.
The sender/receiver flash coverage is set to 24 mm. You can also set the

flash coverage manually.
To also fire the sender unit, set the sender flash firing to ON in step 5 (p.53).

You can press the depth-of-field preview button on the camera to fire the

modeling flash (p.36).
When a Speedlite is set as the sender unit, the time until auto power off

takes effect is approx. 5 min.
If a receiver unit's auto power off takes effect, press the sender unit's test

flash button (p.56) to turn on the receiver unit. Note that the test flash
cannot be performed while the camera's timer is operating.
a: Fully Automatic Wireless Flash Shooting
When you need more flash output or you
want to perform lighting more easily, you
can increase the number of receiver
units and fire them as a single flash.
To add receiver units, perform the same
procedure as "Autoflash Shooting Using
One Receiver Unit" (p.55). Set the firing
group to A, B, or C (p.59). The flash will
not fire if it is set to D or E.
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