Canon 580EX - Speedlite II - Hot-shoe clip-on Flash Instruction Manual page 39

Using Fully Automatic Wireless Flash
Flash exposure compensation and other settings set with the master unit will
also tie automatically set in the slave units. Thus, you need not make settings
on the stave unit{s}. Wireless flash with the following settings can be done in
the same way as with normal flash shooting .
" Flash exposure compensation " FHB
" High-speed sync [FP flash] " Manual flash
" FE lock " Stroboscopic flash
Lyl Wifh FC lack. if even one Speediite will resuiE in underexposure, the < f 7 icon will blink in
the viewfinder. peen the ape rEUre mare or move the stave unit closer to the subject.
5etiing Communication Channel
If there is another Canon wireless flash system nearby, you can change the
channel No . to prevent signal confusion . Bath the master and slave units must
be set to the same channel No.
IETTL DZoom 2'irnm , 7
~Ii1C,n
z.F 1
1 3 '1~-
i
---
i ~Q loom 21
7
Press the ¢ZOOMI'x, > button so
that blinks .
Set the channel No .
~ Turn the ~O . > dial to select the channel
number, then press the <(, ; a button-
37