2193 Custom Function Settings2: Release/Drive speed priorityFor the first shot, shutter release is given priority over focusing thesubject. During continuous shooting, the continuous shooting speed isgiven priority more than with setting 1.3: Release/Tracking priorityFor the first shot, shutter release is given priority over focusing thesubject. For the second and following shots during continuous shooting,focus-tracking of the subject is given priority.C.Fn III -4 AI Servo AF tracking methodIn the AI Servo AF mode while you are focus-tracking a subject, the cameracan either continue focusing the target subject even if a closer subject(closer than at the main focus point) suddenly appears in the picture, or thecamera can switch to focus the closer subject.* Main focus point = With automatic AF point selection: Center AF pointWith manual AF point selection + AF point expansion (C.Fn III -8-1/2/3): Manually-selected AF point0: Main focus point priorityThe active AF point will switch to the main focus point and start focusingthe closer subject. Convenient when you always want to focus theclosest subject.1: Continuous AF track priorityAny closer subject appearing in the picture will be ignored as anobstruction. The main focus point does not take priority, so the trackingof the target subject can continue and switch to an adjacent AF pointbased on the preceding focusing result. Convenient when obstaclessuch as telephone poles appear in front of the target subject.C.Fn III -5 Lens drive when AF impossibleIf focus cannot be achieved with autofocus, the camera can either keeptrying to focus or stop.0: Focus search on1: Focus search offPrevents the camera from becoming grossly out of focus as it attemptsto focus again. Especially convenient with super telephoto lenses whichcan become extremely out of focus.COPY
