Canon EOS-1D C, Instruction Manual

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3
Customizing AF Functions
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When the AF area selection mode is set to 61-point automatic selection
AF or Zone AF, AF is possible while using the subject’s color or face
detection information.
Using this function makes it easier to continue focusing a moving
subject with AI Servo AF. Using this function also makes it easier to
focus human subjects in One-Shot AF mode.
ON: Enable
The AF point is automatically selected
based on the AF information combined
with the color and facial information of
the subject. With AI Servo AF, the color
of the area where focus is initially
achieved is recorded.
The camera then tracks that color by switching AF points. If a human
face is detected, the AF tracking and AF point switching switch to this
face. With 61-point automatic selection AF and AI Servo AF, you can
manually select the initial AF point to be used to focus. If multiple faces
are detected, the camera focuses using the AF point on the optimum
face given current conditions.
With One-Shot AF, the camera selects the AF point based on face position
information, and you can give priority to composition when taking the picture.
OFF: Disable
The AF point is selected automatically based only on the AF information.
2 4
Auto AF point selection: EOS iTR AF
When [ Auto AF pt sel: EOS iTR AF ] is set to [ Enable ], focus will take
slightly longer than with [ Disable ].
Even if you set [ Enable ], the desired result may not be obtained
depending on the shooting conditions and subject.
Under low-light conditions when the flash emits the AF-assist beam
automatically, the AF point is selected automatically based only on the
AF information. (The AF does not use facial information.)
Face detection may not work if the face is small or in low-light condition.
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