Ricoh 170543, GXR manual Pre-AF, Exposure Metering, Using pre-AF increases the drain on the battery

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Pre-AF

If On is selected when Multi AF or Spot AF is selected for Focus (page 64), the camera will continue to focus even when the shutter-release button is not pressed halfway (the focus range is narrower than for normal focus). This may decrease the time needed to focus, potentially improving shutter response.

Cautions

•Pre-AFis not available when MF, Snap, or ∞ is selected for Focus (page 64).

•Using pre-AF increases the drain on the battery.

Exposure Metering

Choose how the camera measures light for exposure.

Option	Description
Multi*	The camera measures light in 256 areas of the frame.
	The camera measures light in the entire frame but assigns
Center	the greatest weight to the center. Use when the subject
	in the center of the frame is brighter or darker than the
	background.
	The camera measures light with the subject in the center
Spot	of a frame, ensuring the optimal exposure even when it is
	markedly brighter or darker than the background.

* The icon is displayed on the DIRECT screen only.

When Center or Spot is selected,	4:3 N
the current selection is shown by
an icon in the picture display.

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