Canon EOS-1D C EOS 1D X Instruction Manual - Page 343

85: Custom Controls : AF stop The AF will stop while you hold down the button assigned to this function. Convenient when you want to lock the focus during AI Servo AF. : Switch to registered AF function After setting AF area selection mode (p.69), Tracking sensitivity (p.88), Acceleration/deceleration tracking (p.89), AF point auto switching (p.90), AI Servo 1st image priority (p.92), and AI Servo 2nd image priority (p.93) and assigning this function to a button, you can apply these settings while you hold down the assigned button for AF. Convenient when you want to change the AF characteristics during AI Servo AF. *2: In step 3 on page 337, if you press the button, the "Switch to registered AF func." setting screen will appear. Turn the or dial to select the parameter to be registered, then press to append a checkmark . When you select a parameter and press , you can set the parameter. By pressing the button, you can revert the settings to their defaults. : ONE SHOT z AI SERVO You can switch the AF mode. In One-Shot AF mode, when you hold down the button to which this function is assigned, the camera switches to AI Servo AF mode. In the AI Servo AF mode, the camera switches to One-Shot AF mode only while you hold down the button. Convenient when you need to keep switching between One-Shot AF and AI Servo AF for a subject that keeps moving and stopping. : Switch to registered AF point During metering, when you press the button assigned to this function, the camera will switch to the AF point registered on page 342. *3: In step 3 on page 337, when you press the button, you can select [Switch only when btn is held] or [Switch each time btn is pressed]. 343