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45.
Wireless Multi
-
Flash
E
-
TTL
Autoflash Operation
There are
two
types
of
wireless
multi
-
flash
E-TTL
autoflash opcr-
ations:
a
<
RATIO
>
OFF: All slaves fire
the same flash output.
Q)
<
RATIO
>
ON: Slaves are given
an
ID,
either A or
B.
The flash
ratio is then set for each
ID.
The flash ratio can be set only when
the camera is an EOS
-
3.
The flash ratio cannot be set with an
EOS
Elan
IVIIE,
EOS 50/5OE, EOS
Rebel
G/500N, EOS
IX
or
EOS
K71X
Lite.
a
By changing the distance
between the subject and
slaves, the lighting balance
(flash ratio) can be changed
accordingly.
Two or more slaves can be
used.
With the EOS
-
3, a modeling
flash can be fired to check
the lighting effects before
the picture is taken.
As an example, two slaves are
used here, one positioned on the
left and the other on the right of
the subject.
All
the
slaves set at the same
channel fire at the same output
controlled by
E
-
TTL
autoflash to
obtain a correct exposure.
Thc operation ~rooedure is thc same
as with wireless
I.>-'ITI,
autoflash.
0
With the EOS-3, make sure the
ST-E2's flash ratio control
lamp is off. (If necessary, press
the
<RATIO
>
button to turn it
off.)
If
the flash ratio control
lamp is on, the Speedlite may
not fire or a correct exposure
may not be attained. After
turning off the flash ratio con-
trol lamp, set the main switch
to
<HOLD
>
to prevent the flash
ratio control lamp from light-
ing inadvertantly.
Sample Multi
-
Flash
Setup with Uniform
Flash Output
+%-
In
the sample flash setup shown
below, the lighting on the left
will
be brighter than on the right of
the subject.
Outdoors
COPY
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