Nikon D5000 - Manual (Page 173)

155
L
This option determines how the focus point for autofocus is
selected (0 56).
If On is selected and lighting is poor, the built-in AF-assist
illuminator (0 55) will light to assist the focus operation in
single-servo AF (AF-S selected for focus mode, or single-servo AF
selected in AF-A focus mode) when Auto-area is selected for AF-
area mode or when Single point, Dynamic area, or 3D-
tracking (11 points) is selected and the center focus point is
used. If Off is selected, the AF-assist illuminator will not light to
assist the focus operation. The camera may not be able to focus
using autofocus when lighting is poor.
This option determines how the focus point for autofocus is
selected in live view (0 43).
a: Autofocus
a1: AF-area Mode G button
➜ A Custom Settings menu
a2: Built-in AF-assist Illuminator G button
➜ A Custom Settings menu
A
See Also
See page 197 for restrictions on the lenses that can be used with AF assist. See page 212 for
the shooting modes in which the AF-assist illuminator can be used.
a3: Live View Autofocus G button
➜ A Custom Settings menu
AF-assist illuminator