26With multiple Canon Speedlites having the wireless flash feature, you cancreate various lighting effects with the same ease as using normal E-TTL IIautoflash.The settings you input with the master unit attached to the camera arealso automatically transmitted to the slave units which are controlled bythe master unit via wireless. Therefore, you need not operate the slaveunit(s) at all during the shoot.For details on wireless flash photography and operating the master unit,see the master unit’s instruction manual. The procedure below applies to amaster unit attached to the camera and slave unit(s) controlled by wireless.1 Set the master unit.Attach the master unit Speedlite tothe camera and set it as necessary.2 Set the 430EX II as the slave unit.Hold down the <G>button for 2 sec. or more.3 Check the communicationchannel.If the master unit and slave unit(s) areset to a different channel, set them allto the same channel (p.29).4 Set the slave ID.Set the slave ID when using two (Aand B) or three (A, B, and C) slavegroups (p.30).5 Position the camera andSpeedlites.Position the slave unit(s) within themaster unit’s wireless transmissionrange.Wireless FlashCOPY