Canon 550ex Full Manual page 18

l.]..i,,'iil':];|.i.i'i:.',i!:l.,],i:'i.!:..i.,,jt'll1.1.''liiii,!ii:{:!ii;l1
The following wireless E-TTL autoflash procedure is for a master unit with
t h r e e s l a v e u n i t s . T h i s p r o c e d u r e s e t s t h e A : B f l a s h r a t i o a n d t h e f l a s h
exposure compensation amount for slave unit C.
' The flash ratio range for A:B is the same as when only two slave units are used.
' Flash exposure compensation with slave unit C can be set up to t3 stops in 1/3 or 1/2-stop
increments.
. The slave lD of the slave unit on the camera's left is A.
. The slave lD of the slave unit on the camera's right is B.
. The slave lD of the slave unit illuminating the background is C.
. Master flash OFF is set for the master unit.
' The camera (attached with the master unit) and three slave units are properly positioned for the
subject.
1 O n t h e m a s t e r u n i t , p r e s s t h e
liF[ff.r.
' Pressing the < SEL/SET > button changes
the selection in the following loop:
**^**ro,,,*l-*\
P r e s s t h e
lEFFrf.r ON A:B.
.
lEEElnl ON A:B will blink.
Press the <SEL/SET> button again
to select rEE5ir.r oN A:B c.
.
lEl!5I61 A:B C will blink.
2
3
^{F
-3
t*
- J ?
ETTL El Zqtnf 1.4^
\ -
- u
n =
- -!I-.SL
^/\\ !
E T T L
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