Nikon D300s manual 268, AF-Assist Illuminator

a9: Built-in AF-assist Illuminator Gbutton ➜ ACustom 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 (0 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.

AThe AF-Assist Illuminator

The AF-assist illuminator has a range of about 0.5–3.0 m (1 ft. 8 in.–9 ft. 10 in.); when using the illuminator, use a lens with a focal length of 24– 200 mm and remove the lens hood.

ASee Also

See page 345 for restrictions on the lenses that can be used with AF assist.

U

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