A8: Built-In Af-Assist Illuminator - Nikon Z 50 Reference Manual

a8: Built-in AF-Assist Illuminator

Choose whether the built-in AF-assist illuminator lights to assist
the focus operation in photo mode when lighting is poor.
Option
On
Off
D
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.
272 Menu Guide > A Custom Settings
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.
The illuminator does not light to assist the focus operation.
The camera may not be able to focus when lighting is poor.
G button ➜ A (Custom Settings menu)
Description