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E57
The Setup Menu
Reference Section
AF Assist
Enable or disable AF-assist illumination, which assists autofocus operation when
the subject is poorly lit.
Press the d button M z tab M AF assist
Option Description
Auto (default setting)
AF-assist illumination is used to assist the focus operation
when the subject is poorly lit. The illuminator has a range of
about 1.9 m (6 ft 2 in.) at the maximum wide-angle position
and about 1.1 m (3 ft 7 in.) at the maximum telephoto position.
Note that for some scene modes such as Museum (A44) or
Pet portrait (A46) scene mode, or focus areas, the AF-assist
illuminator may not light even when Auto is selected.
Off
AF-assist illuminator does not light up. The camera may be
unable to focus under dim lighting.