Canon Canon Speedlite 600EX RT instruction manual Autoflash Shooting Using Multiple Slave Units

a: Fully Automatic Wireless Flash Shooting

If the <D> lamp is red, radio transmission has not been established. Check again the transmission channels and wireless radio IDs of the master unit and slave unit. If you cannot connect with the same settings, turn the power off and on again.

Autoflash Shooting Using Multiple Slave Units

When you need more flash output or you want to perform lighting more easily, you can increase the number of slave units and fire them as a single flash.

To add slave units, use the same procedure as “Autoflash Shooting Using One Slave Unit”. Set A, B or C as the firing group. The flash will not fire if it is set to D or E.

When the number of slave units is increased or master flash firing set to ON, automatic control is performed to fire all flashes at the same flash output and ensure that the total flash output results in the standard exposure.

The master/slave flash coverage is set automatically to 24 mm. You can also set he flash coverage manually.

You can press the depth-of-field preview button on the camera to fire the modeling flash (p.38).

When the Speedlite is set as the master unit, the time until auto power off takes effect is 5 min.

If the slave unit’s auto power off takes effect, press the master unit’s test flash button (p.16) to turn on he slave unit. Note that the test flash cannot be fired while the camera’s metering imer is operating.

The autoflash system (E-TTL II/E-TTL) depends on the camera used and is set automatically. Note that <a> is displayed on the LCD panel for both systems.

You can change the time until the slave unit’s auto power off takes effect (C.Fn-10/p.98).

You can enable a beep to sound when the charge of all the slave units is complete (C.Fn-20/p.99).

You can set it up so that the AF-assistant beam emitter will not blink when the slave unit recycling is completed (C.Fn-23/p.100).

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