Fully Automatic Wireless Flash
This method has all the Speedlitesfire at the same flash output with E-
TTL
II
autoflash controlling the total flash output.
ETTL
mJZoom
2'-1mm
Setthe camera-attached 580EX
II
as the masterunit.
ETTL
mJZoom
2'-1mm
Setthe other 580EX
II
Speedlites(s) as the wireless
slave unit(s).
ETTL
mJZoom
2'-1mm
~~~~A
Checkthe communication
channel.
Ifthe master unit and slave unit(s) are
setto adifferent channel, set them all
to the same channel (p.40).
Position the camera and
Speedlites.
Position the Speedlites within the
range shown on the next page.
Setthe master unit's flash mode
to
<ETTL>.
Forshooting,
<ETTl>
will also be
setautomatically for the slave unit(s).
Check that the flash
is
ready.
Whenthe slave unit(s)
is
readyto fire,
theAF-assist beam will blink at 1-sec.
intervals.
37