Test Flash And Modeling Flash From A Slave Unit - Canon Speedlite 600EX-RT Instruction Manual

When the flash mode of the firing group is set to <a> or </>,
exposure is controlled to obtain a standard exposure for the main subject as
a single group. If you shoot with multiple firing groups pointing toward the
main subject, overexposure may result.
The firing groups to be fired do not need to be consecutive; for example, A,
C, E can be set.

Test Flash and Modeling Flash from a Slave Unit

In radio transmission wireless shooting, you can fire the test flash and
modeling flash from a 600EX-RT set as a slave unit.
Modeling flash is not possible from a slave unit with cameras released up
to 2011.
For the precautions related to modeling flash, see page 38.
When two or more units are set to master, the master unit with the <D>
lamp lit in green is the one that fires.
Test Flash and Modeling Flash from a Slave Unit
Take the picture.
5
Each slave unit fires in the respective
flash modes set.
Display <N>.
1
Press the slave unit's function button
4 to display <N>.
<>> and <Z> are
displayed.
Fire the flash.
2
Test flash
Press the slave unit's function button
3 <Z>.
Modeling flash (p.38)
Press the slave unit's function button
2 <>>.
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