Canon 0585C006 Instruction Manual page 43

Wireless flash functions

You can set radio transmission wireless flash shooting. For details,
see Chapter 4 (p.45).
Clear settings

You can revert the settings of Speedlite to their default settings.
When P.Fn-05-0 is set (p.87), AF-assist beam (p.22), which uses a

series of small flashes, is emitted as necessary, even if you set [Flash
firing] to [Disable].
If the flash coverage is automatically set such as when the bounce

adapter is attached or the wide panel is used, setting [Zoom] (flash
coverage) is not possible.
When the flash exposure compensation is set on the flash, flash exposure
compensation cannot be performed from the camera. If both are set at the
same time, priority is given to the setting on the flash.
Flash Control from the Camera's Menu Screen
43