Slave Group Control
Firing group A
If you need more flash output or wish
to perform more sophisticated lighting,
you can increase the number of slave
units.
Simply set an additional slave unit to
the firing group (A, B or C) whose flash
output you want to increase. You can
increase the number of slave units up
to 15 units in total.
For example, if you set a firing group with three slave units to
<A>,the three units are controlled as a single firing group A with
a large flash output.
To fire the three firing groups A, B and C at the same time, set
<A:B:C>. With the < A:B > setting, firing group C does not fire.
If you shoot with firing group C pointing directly toward the
main subject, overexposure may result.
The flash ratio of 8:1 to 1:1 to 1:8 is equivalent to 3:1 to 1:1 to
1:3 (1/2-stop increments) when converted to number of stops.
The details of the flash ratio settings are as follows.
14
Modeling Flash
Modeling Flash from a Master Unit
Press the depth-of-field preview
button on the camera.
The flash fires continuously for 1
sec.
ETTL: Wireless Multiple Flash Shooting with Flash Ratio
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