Canon SD850 IS manual MDm s Dm, Face Detect

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The autofocus frame (AF frame) indicates the area used to set the focus. Select from among the following three focusing methods.

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Face

Detect

You can have the camera automatically detect the position of a face and use this data to set the focus and exposure* while shooting. In addition, the camera will meter the subject so that the face is correctly illuminated when the flash fires. If a face is not detected, shooting will take place with

[on].

*Only in evaluative metering mode (p. 55).

		The camera detects	the subject	and highlights
(No frame)	On	the AF frames, from	9 available	points, that it will
		use to determine the focus.
[]		The camera focuses using the center AF frame.
	OFF	This is convenient for focusing on a specific part

of a subject with greater certainty.

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•The AF frame appears as follows (when the LCD monitor is on) when the shutter button is pressed halfway.

-Green: Shooting preparations complete

-Yellow: Focusing difficulty (AiAF set to [Off])

-No Display: Focusing difficulty (AiAF set to [On])

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