High-Speed Sync (Fp Flash) - Canon 580EX - Speedlite II - Hot-shoe clip-on Flash Instruction Manual

m High-Seed Sync (FP Flash)
With high-speed sync, you can use flash with all shutter speeds . This is
convenient when you want to use aperture priority for fill-flash portraits .
-er7 ~ zoom 5~mm -~
Press the C~HICC1i a Button so that
<m> is displayed .
a Check that the a~Ha icon is lit in the
viewfinder,
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m I
s Stroboscopic flash cannot be set,
s if you set a shutter speed that is th0 same or slower than the camera's maximum flash
sync speed, 4 fH> wil not he displayed in the viewfinder.
e With high-speed sync, the faster the shutter speed, the shorter the effective flash
range will be . Check the NCO panel for the effective flash range .
. TO return !a normal flash, press the < SHI fIs > button so that c m : icon turns off .
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