Canon 430EX II Instruction Manual

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With high-speed sync (FP flash), the flash can synchronize with all 
shutter speeds. This is convenient when you want to use aperture 
priority for fill-flash portraits.
Press the <E> button so that 
<
c> is displayed.
 
Check that the <F> icon is lit in the 
viewfinder.
c
High-Speed Sync
 
If you set a shutter speed that is the same or slower than the camera’s 
maximum flash sync speed, <F> will not be displayed in the viewfinder.
 
With high-speed sync, the faster the shutter speed, the shorter the 
effective flash range will be. Check the LCD panel for the maximum flash 
range for the respective shutter speed.
 
To return to normal flash, press the <E> button so that <c> icon 
turns off.
With a slow shutter speed, you can create a light trail following the 
subject. The flash fires right before the shutter closes.
Press the <E> button so that 
<
r> is displayed.
r
Second-Curtain Sync
 
Second-curtain sync works well in the camera’s “buLb” mode.
 
To return to normal flash, press the <E> button. The <r> icon will 
disappear.
 
With E-TTL II/E-TTL, when you press the shutter button completely, a 
preflash will be fired. Then right before the shutter closes, the main flash 
is fired.
A81_02.fm  Page 16  Thursday, February 14, 2008  11:36 AM
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