Canon EOS Rebel T2i EOS REBEL T2i / EOS 550D Instruction Manual - Page 149

3 Setting the FlashN Flash exposure compensation See "y Flash Exposure Compensation" on page 88. E-TTL II For normal flash exposures, set it to [Evaluative]. If [Average] is set, the flash exposure will be averaged for the entire metered scene as with an external metering flash. Since flash exposure compensation may be necessary depending on the scene, this setting is for advanced users. Clear flash settings On the [External flash func. setting] screen, press the button to display the screen to clear the flash settings. When you select [OK], the settings for the built-in flash and external Speedlite will be cleared. Setting the External Speedlite Custom Functions 1 Display the Custom Function. Select [External flash C.Fn setting], then press . 2 Set the Custom Function. Press the key, then press . The procedure is the same as setting the camera's Custom Functions (p.190). To clear all the Custom Function settings, select [Clear ext. flash C.Fn set.] in step 1. 149