Nikon D780 DSLR Camera (Body Only) - Manual (Page 707)

661 Menu Guide > B The Setup Menu
Display roll and pitch information based on information from
the camera tilt sensor.
• If the camera is tilted neither left nor right, the roll reference
line will turn green. If the camera is tilted neither forward nor
back, the dot (
I ) in the center of the display will turn green.
• Each division is equivalent to 5°.
D Tilting the Camera
The virtual horizon display is not accurate when the camera is tilted at a
sharp angle forward or back. If the camera is unable to measure tilt, the
amount of tilt will not be displayed.
Virtual Horizon
G button
U B setup menu
Camera level Camera tilted left or
right
Camera tilted forward
or back