1703 Custom Function SettingsC.Fn III -8 AF expansion with selected pointIn the AI Servo AF or One-Shot AF mode with manual AF point selection,you can increase the number of AF points by using the Assist AF points.Effective when it is difficult to track a moving subject with just one AF point.0: Disable1: Enable (left/right Assist AF points)The points on the immediate left and right (or top and bottom for avertical shot) of the user-selected AF point become active.2: Enable (surrounding Assist AF points)The points immediately surrounding the user-selected AF point becomeactive.C.Fn III -9 Selectable AF point0: 19 points1: Inner 9 pointsThe user-selectable AF points will be limited to the inner 9 points.2: Outer 9 pointsThe user-selectable AF points will be limited to the outer 9 points.The AF point expansion centers on the selected AF point. Therefore, if aperipheral AF point is selected, the AF point expansion will be smaller asshown below.Even when C.Fn III -9-1/2 is set, the expansion will take effect.Assist AF point expanded by 1 point on left and right Assist AF point expanded by 1 point all aroundSelected AF point Expansion pointsWith settings 1 and 2, the selectable AF points and the selection pattern willbe as shown below:Inner 9 points Outer 9 pointsAutomatic selectionAutomatic selectionAutomatic selectionAutomatic selection
