Af-Assist Illumination - Nikon Z fc N2016 Reference Manual

AF-assist illumination

The AF-assist illuminator has a range of about 1–3 m (3 ft 4 in.–9 ft 10
in.). Some lenses or lens hoods may block the illuminator at certain focus
distances. Remove the lens hood before shooting.
･ For information on restrictions when shooting with the camera's
illuminator, see the Nikon Download Center.
https://downloadcenter.nikonimglib.com/
AF-assist illumination
604