Nikon D300S - A9: Built-In AF-Assist Illuminator; A9; Built-In AF-As~;Ist Illuminator

a9: Built-in AF-assist Illuminator MENU button .. () Custom Settings menu
Choose whether the built-in AF-assist
illuminator lights
to assist the focus
operation when
lighting is poor.
Option Description
The AF-assist illuminator lights when lighting is poor. AF-
assist illumination is only available when both of the
following conditions are met:
On ,1. Single-servo autofocus is selected for focus mode (0 74).
;
2. Auto-area AF is chosen for AF-area mode (CJ 76), or single-
point or dynamic-area AF is chosen and the center focus
point is selected.
_."'- - .-.. .---.- -" - -
The AF-assist illuminator does not light to assist the focus
Off ;operation. The camera may not be able to focus using
:autofocus
when lighting is poor.
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PI The AF-Assist Illuminator
The AF-assist illuminator has a range of about 0.5-3.0 m (1 ft. 8 in.-9 ft.
lOin.);
when using the illuminator, use a lens with a focal length of 24-
200 mm and remove the lens hood.
PI See Also
See page 345 for restrictions on the lenses that can be used with AF
assist.
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