A3: Built-In Af-Assist Illuminator - Nikon D5500 Reference Manual

a3: Built-in AF-assist Illuminator

Choose whether the built-in AF-assist
illuminator lights to assist the focus
operation when lighting is poor.
Option
On
Off
250 A Custom Settings: Fine-Tuning Camera Settings
The AF-assist illuminator lights when lighting is poor (for
more information, see page 352).
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.
G button ➜ A Custom Settings menu
Description
AF-assist illuminator