Operation Manual

5.ETTL: Use the Wireless Shooting of Flash Ratio
Auto Flash Shooting with Two Slave Unit
Divide the slave units into A and B groups and balance their shooting
illumination (flash ratio).
Auto control exposure to make the total output of A and B flash
groups up to standard exposure.
Setting the flash groups of
1 slave unit.
● Set the flash as slave unit.
● Press Function Button 3
< > and choose
<A> or <B>.
● Set one slave unit as <A>,
the other as <B>.
Gr
MENU 2
RATIO
Setting < >.
2
● Step 2 to Step 4 are set on
the master unit.
● Press the Function Button
4 on the master unit so that
< > is displayed.
MENU 2
Setting <RATIO A:B>.
3
● Press Function Button 2
< > so that
<RATIO A:B> is displayed.
Setting flash ratio.
4
● Press Function Button 3
< >.
● Turn the Select Dial to set
the amount of flash ratio
and press<SET> button to
confirm.
Taking the picture.
5
● The slave units will flash
according to the flash ratio.
Gr
Auto Flash Shooting with Three Slave Unit
Setting <RATIO A:B C>.
2
● Use the same method of
step 1 and step 3 (Page
71) to set the master unit
as <RATIO A:B C>.
Setting the slave group
1 <C>.
● Use the same method of
step 1 (Page 71) to set the
slave unit of flash
group<C>.
Setting flash exposure
3 compensation.
● Use the same method of
step 1 (Page 71) to set the
slave unit of flash
group<C>.
● Press Function Button 2
< >. Turn the Select
Dial to set the amount of
flash exposure
compensation and
press<SET> button to
confirm.
A
B
C
About Slave Group Control
If three slave units are all set to
<A> in terms of slave ID, these
slave units will be controlled as if
they were one camera flash in
slave group A.
● When setting < RATIO A:B C >, group A, B and C will fire a
flash synchronously; when setting< RATIO A:B >, group C
will not fire a flash.
● If shooting under the situation that group C is toward the
main shooting subject, over exposure might occurred.
● In some EOS film cameras that support E-TTL autoflash,
you cannot perform multiple flash wireless shooting with a
flash ratio setting.
ID=A ID=A ID=A
Slave Group A
● 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 step increment).
● The details of the flash ratio settings are as follows.
8:1 4:1 2:1 1:1 1:2 1:4 1:8
5.6:1 2.8:1 1.4:1 1:1.4 1:2.8 1:5.6
6. M: Wireless Flash Shooting with Manual Flash
This describes wireless (multiple shooting) using manual flash. You
can shoot with a different flash output setting for each slave unit
(firing group). Set all parameters on the master unit.
Setting the flash mode to
1 <M>.
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