Nikon D850 User Manual page 296

Monitor color balance
Virtual horizon
Information display
Auto
Manual
AF fine-tune
AF fine-tune (On/Off)
Saved value
Default
List saved values
Non-CPU lens data
Lens number
Focal length (mm)
Maximum aperture
Clean image sensor
Clean now
Clean at startup/shutdown
Lock mirror up for cleaning
272
Adjust monitor color balance.
View a virtual horizon based on
information from the camera tilt sensor.
Adjust the information display for
different viewing conditions.
Fine-tune focus for different lens types.
AF tuning is not recommended in most
situations and may interfere with
normal focus; use only when required.
Auto fine-tuning is available in live view;
more information is available in a Menu
Guide that can be downloaded from the
Nikon website (0 i).
Record the focal length and maximum
aperture of non-CPU lenses, allowing
them to be used with functions
normally reserved for CPU lenses
(0 218).
Vibrate the image sensor to remove
dust (0 312).
Lock the mirror up so that dust can be
removed from the image sensor with a
blower (0 315). Not available when the
battery is low (J or lower) or when the
camera is connected to a smart device
via Bluetooth or to other devices via
USB.
(defaults to Auto)