Canon Speedlite 580EX II Instruction Manual page 8

Getting Started and
Basic Operation
I
Installing the Batteries
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8
Attaching to the Camera
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9
Turning on the Power Switch
................................
10
Fully Automatic Flash Shooting
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11
Using E-TTL II and E-TTL Autoflash in the
Shooting Modes
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12
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Cautions for firing continuous flashes
-
To avoid overheating and degrading the flash
head, do not fire more than 20 continuous
flashes. After 20 continuous flashes, allow a rest
time of at least 10 min.
If you fire more than 20 continuous flashes and
then fire more flashes in short intervals, the
inner overheating prevention function may be
activated to make the recycling time about 8 to
20 sec. If this occurs, allow a rest time of about
15 min. and the flash will then return to normal.