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QuickGuide to Canon Integrated Speedlite Transmitter Operation

Choose this if you want the want the built-in flash to trigger off-camera Speedlites, without contributing to the flash exposure. Fire the Speedlite( s ) with separate flash exposure from the built-in flash Choose this if want to fire the Speedlites (either at equal power or with A: B ratio control), with independent flash exposure from the built-in flash unit Wireless Speedlite Set-up

580EX II Speedlite : How to prevent the sender unit from firing its flash.

You can disable the sender unit from firing so that only the receiver unit( s ) will fire a flash. Press the button so that the display blinks as shown on the left Disable the sender unit's flash firing

The camera show E in Creative Zone when using the 580EX II

CFn-05-1 is geared for EOS -series film cameras .Do not set it if you have a. EOS DIGITAL camera or the E0 S REBEL T2 / 300 _ If CFn-5-1 is set for such cameras, the flash control will not work properly The flash might not fire of it might fire only at full output With Type-A cameras, if C.Fn-05-1 is set, wireless autoflash shooting will not be possible,

QuickGuide to Canon Speedlite 580EX II Modes and Functions

When set to "Off" the Sender and receiver( s ) will automatically output the same amount of light. When set to "A:B" you can adjust the auto-exposure ratio between the Sender (A) and receivers (B). When set to "A:B C" you can adjust the autoexposure ratio between the Sender (A) and receivers (B) while adding a separate, independent group of receivers (C).