Canon Speedlite ST-E10 Advanced User's Manual page 70

Slow synchro
You can set the flash-sync speed for wireless flash photography in <
priority) or < > (Program AE) mode.
Flash mode
You can choose the flash mode from [E-TTL II flash metering], [Manual flash], [MULTI
flash (stroboscopic)], or [Individual group control] to suit your desired flash
photography.
Wireless functions
Automatically set to wireless flash photography using radio transmission. For details,
see "Wireless Flash
Shutter synchronization
As the flash firing timing/method, you can choose from [First-curtain synchronization],
[Second-curtain synchronization], or [High-speed synchronization]. For normal
wireless flash photography, set to [First-curtain synchronization].
Flash exposure compensation
Just as exposure compensation is adjustable, you can also adjust flash output.
Flash exposure bracketing
You can take three shots while automatically changing the flash output.
Clear settings
You can restore default transmitter settings.
Note
With [Flash mode] set to [Individual group control], choose [E-TTL II], [Manual
flash], [AutoExtFlash], or [Disable] as the flash mode for each group.
Photography."
70
> (aperture