Canon Speedlite 430EX II Manual

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You can set the flash output from 1/64 power to 1/1 full power in 1/3-
stop increments.
Use a hand-held flash meter to determine the required flash output to 
obtain a correct flash exposure. Setting the camera’s shooting mode to 
<W> or <q> is recommended.
1
Press the <D> button so 
that <
q> is displayed.
2
Set the flash output.
 
Press the <8> button.
X
The flash output blinks.
 
Press the <9> button to set the 
flash output, then press the <8> 
button.
 
Press the shutter button halfway to 
see the effective flash range 
displayed.
The manual flash output value will change as shown below when the 
flash output is decreased or increased.
q: Manual Flash
Flash Output Display
(Example)
Figures for decreased flash output 
1/1
1/1 -0.3
1/1 -0.7
1/2
1/2 -0.3
1/2 -0.7
1/4
•••
1/2 +0.7
1/2 +0.3
1/4 +0.7
1/4 +0.3
•••
← Figures for increased flash output
A81_02.fm  Page 19  Thursday, February 14, 2008  11:37 AM