97a: Fully Automatic Wireless Flash Photography4 Position the camera and the flash.Position them within the range shownon page 90.5 Set the flash mode to <a>.Press the <E> button on themaster unit.Turn <9> to select <Q>, thenpress <8>.The slave unit is set automatically to<a> during shooting, controlledby the master unit.Check that the firing group control isset to <t>.6 Check that the flash is ready.When the slave flash is ready, the AF-assist beam emitter blinks withapprox. 1-second intervals.Check that the master unit’s flash-ready lamp is lit.If there is a fluorescent light or computer monitor near a slave unit, thepresence of the light source may cause the slave unit to malfunction andfire inadvertently.During optical transmission wireless shooting, even if the master andslave units (firing group) are not all fully charged, <G> will not bedisplayed on the master unit’s LCD panel as it is with radio transmissionwireless shooting (with master flash firing OFF). Also, there is no functionfor illuminating or turning off the master unit’s LCD panel according to thecharge status of the master unit and slave units.When C.Fn-20-1 is set on the master unit (p.116), the beep will soundwhen the master unit is fully charged. (This beep does not indicate thatcharging of all flash units is completed as it does with radio transmissionwireless shooting.)
