1733 Custom Function SettingsC.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 the autofocusing.2: Metering start/Meter + AF startThis is useful for subjects which keep moving and stopping repeatedly.In the AI Servo AF mode, you can press the <p> button torepeatedly start or stop the AI Servo AF operation. The exposure is setat the moment the picture is taken. Thus, the optimum focusing andexposure will always be 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.C.Fn IV -3 Quick Control Dial in meteringThe Quick Control Dial’s function while the metering is active can be changed.0: Exposure compensation/Aperture1: AF point selectionYou can select the AF point directly with the <5> dial without first pressingthe <S> button. While metering is active, turning the <5> dial will select ahorizontal AF point. Automatic selection cannot be selected. However, ifC.Fn III -11-2 has also been set, automatic selection can be selected.Press the <O> button and turn the <6/5> dial to set the aperture forexposure compensation or manual exposure.2: ISO speedWhile metering is active, you can turn the <5> dial to change the ISO speed in real-time.COPY
