1813 Custom Function SettingsNC.Fn IV: Operation/OthersC.Fn IV -1 Shutter button/AF-ON button0: Metering + AF start1: Metering + AF start/AF stopDuring autofocusing, you can press the <p> button to stop theautofocusing.2: Metering start/Metering + AF startThis is useful for subjects which keep moving and stopping repeatedly.In the AI Servo AF mode, you can press the <p> button to start orstop the AI Servo AF operation. The exposure is set at the moment thepicture is taken. Thus, the optimum focusing and exposure will alwaysbe achieved as you wait for the decisive moment.3: AE lock/Metering + AF startConvenient when you want to focus and meter at different parts of thepicture. Press the <p> button to meter and autofocus, and pressthe shutter button halfway to attain AE lock.4: Metering + AF start/DisableThe <p> button will not function.C.Fn IV -2 AF-ON/AE lock button switch0: Disable1: EnableThe functions of the <p> and <A/y> buttons will be switchedwith each other’s function.It is best to make the adjustment at the actual place to be photographed.This will make the adjustment more precise.With setting 2, if an Extender is used, the adjustment will be registeredfor the lens and Extender combination.The registered AF microadjustments will be retained even if you use the CustomFunction to clear all settings (p.172). However, the setting itself will be [0: Disable].When set to 1, press the <p> button to display the image index or toreduce the image display.COPY