Canon SBOEX About Color Temperature Information Transmission, Reverting to 580EX Default Settings

About Color Temperature Information Transmission

When the flash fires, the color temperature information is transmitted to certain specific EOS digital camera. This feature optimizes the flash picture's white balance. When the camera'scolor balance is set to <mw3> or <~>, it will work automatically.

To see if this feature works with your camera, see the white balance specification in the "Major Specifications" of your camera'sinstruction manual.

Reverting to 580EX Default Settings

If your EOS camera has the <CLEAR> button, you can press it to revert the camera settings (except Custom Functions) to the default.

About the AF-Assist Beam

Under low-light or low-contrast conditions, the built-in AF-assist beam will be emitted automatically to make it eaasier to autofocus. The AF-assist beam works with all EOS cameras. The AF-assist beam is compatible with 28mm and longer lenses. The effective range is shown below.

Position	Effective Range(m f ft)
Center	0.6 - 10 / 2 - 32.8
Periphery	0.6 - 5/2 - 16.4

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