Nikon D700 Mode D'Emploi
290
U
a9: Built-in AF-Assist Illuminator
Choose whether the built-in AF-assist
illuminator lights to assist the focus
operation when lighting is poor.
illuminator lights to assist the focus
operation when lighting is poor.
A
The 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.
10 in.); when using the illuminator, use a lens with a focal length of 24–
200 mm and remove the lens hood.
A
See Also
See page 375 for restrictions on the lenses that can be used with AF assist.
Option
Description
On
(default)
The AF-assist illuminator lights when lighting is poor. AF-
assist illumination is only available when both of the
following conditions are met:
1. Single-servo autofocus is selected for focus mode (pg. 72).
2. Auto-area AF is chosen for AF-area mode (pg. 74), or
assist illumination is only available when both of the
following conditions are met:
1. Single-servo autofocus is selected for focus mode (pg. 72).
2. Auto-area AF is chosen for AF-area mode (pg. 74), or
single-point or dynamic-area AF is chosen and the center
focus point is selected.
focus point is selected.
Off
The AF-assist illuminator does not light to assist the focus
operation. The camera may not be able to focus using
autofocus when lighting is poor.
operation. The camera may not be able to focus using
autofocus when lighting is poor.