Canon EOS-1D Mark IV EOS-1D Mark IV Instruction Manual - Page 227

3 Custom Function Settings C.Fn III -19 Limit continuous shot count Disable: Continuous shooting is not limited to any number of shots. Continuous shooting will be possible up to the current maximum burst displayed. Enable: The continuous shooting will be limited to the number of shots set with [Register] after which the shooting will stop automatically. Register: The continuous shot count can be limited between 2 to 99. After entering the settings, select [Apply]. C.Fn IV: Operation/Others C.Fn IV -1 Shutter button/AF-ON button 0: Metering + AF start 1: Metering + AF start/AF stop Pressing the button during AF will stop the AF operation. 2: Metering start/Meter + AF start This is useful for subjects which keep moving and stopping repeatedly. In the AI Servo AF mode, you can press the button to repeatedly start or stop the AI Servo AF operation. The exposure is set at the moment the picture is taken. Thus, the optimum focusing and exposure will always be achieved as you wait for the decisive moment. 3: AE lock/Metering + AF start Convenient when you want to focus and meter at different parts of the picture. Press the button to meter and autofocus, and press the shutter button halfway to attain AE lock. 4: Metering + AF start/Disable The button will not function. C.Fn IV -2 AF-ON/AE lock button switch 0: Disable 1: Enable The functions of the and buttons will be switched between them. 227