Canon Speedlite 58OEX Instruction Manual page 7

Getting Started and
Basic Operation
Installing Batteries 8
Attaching to the Camera 9
Turn on the Power Switch
10
Fully Automatic Flash Shooting............................ 11
Using E-TTL II and E-TTL Autoflash in the
Shooting Modes 12
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To avoid overheating and deteriorating the flash head, do not fire rapid
bursts of more than 20 continuous flashes. After 20 continuous flashes,
allow a rest time of at least 10 min.