A12: Built-In Af-Assist Illuminator; A13: Manual Focus Ring In Af Mode - Nikon Z 7 Reference Manual

a12: 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.

a13: Manual Focus Ring in AF Mode

Choose whether the lens focus ring can be used for manual
focus in autofocus mode. Choose from the options below.
• Enable: Autofocus can be over-ridden by rotating the lens focus
ring while the shutter-release button is pressed halfway
(autofocus with manual override). To refocus using autofocus,
lift your finger from the shutter-release button and then press
it halfway again.
• Disable: The lens focus ring cannot be used for manual focus
while autofocus mode is selected.
254 Menu Guide > A Custom Settings
The illuminator lights as required (AF-S focus mode only).
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
G button ➜ A (Custom Settings menu)