Choose whether the built-in AF-assist illuminator lights to assist the focus operation in photo mode when lighting is poor.

Option Description
On The illuminator lights as required when AF-S is selected for focus mode or AF-A is selected and the camera is shooting using AF-S.
Off The illuminator does not light to assist the focus operation. The camera may not be able to focus when lighting is poor.

The AF-Assist Illuminator

The AF-assist illuminator has a range of about 1–3 m (3 ft 4 in.–9 ft 10 in.); when using the illuminator, remove the lens hood. Do not obstruct the AF-assist illuminator while it is lit.