Nikon Z9 Mirrorless Camera - Manual (Page 712)

712 B The Setup Menu: Camera Setup
Adjust viewfinder color balance to your taste. [ Viewfinder color
balance ] can only be adjusted when the viewfinder is the active display.
It cannot be adjusted when the monitor is on or when [ Monitor only ] is
selected for monitor mode. Otherwise the procedure is the same as for
[
Monitor color balance ] ( 0 710).
Choose a magnification for the viewfinder display from [ Standard ] and
[ Small ]. Selecting [ Small ] makes it easier to see the entire subject.
Viewfinder Color Balance
G button
U B setup menu
Finder Display Size (Photo Lv)
G button
U B setup menu