139The camera’s built-in flash can work as a master unit with CanonSpeedlites having a wireless slave feature and wirelessly trigger theSpeedlite to fire. Be sure to read about wireless flash photography inthe Speedlite’s instruction manual.Regarding your Speedlite (slave unit), refer to its instruction manual andset it as follows. Slave unit control settings other than the below are allset with the camera. Different types of slave units can be used andcontrolled together.(1) Set the Speedlite as a slave unit.(2) Set the Speedlite’s transmission channel to the same one asthe camera’s.(3) If you want to set the flash ratio (p.144), set the slave unit ID.(4) Position the camera and slave unit(s) within the range shownbelow.(5) Face the slave unit’s wireless sensor toward the camera.Canceling the slave unit’s auto power offTo cancel the slave unit’s auto power off, press the camera’s <A>button. If you are using manual flash firing, press the slave unit’s testfiring (PILOT) button to cancel the auto power off.Using Wireless FlashNSlave Unit Settings and PositionApprox.10m(32.8ft.)Approx.7m(23.0ft.)oApprox.80Approx. 5m(16.4ft.)Approx. 7m(23.0ft.)Wireless flash set-up exampleIndoorsOutdoors
