Nikon Z9 Mirrorless Camera - Manual (Page 515)

515 C The Photo Shooting Menu: Shooting Options
Photographs taken at high ISO sensitivities can be processed to reduce
“noise” (randomly-spaced bright pixels).
High ISO NR
G button
U C photo shooting menu
Option Description
[ High ] Reduce noise in photographs taken at all ISO sensitivities.
The higher the sensitivity, the greater the effect. Choose
the amount of noise reduction performed from (in order
from high to low) [
High ], [ Normal ], and [ Low ].
[ Normal ]
[ Low ]
[ Off ]
Noise reduction is performed only as required. The
amount of noise reduction performed is always lower
than when [
Low ] is selected.