Nikon D300 User Manual page 506

2. The following screen shows the
indicator. You can now use it to level the camera on your
tripod.
My Recommendation: Honestly, I don't use
very often. Instead I have
display) turned on. The grid lines allow me to look at my
subject while leveling my camera. As a stand-alone,
non-see-through
functionality for me. You may have other uses for it. To me,
the smaller see-through version found in
D-Movie mode is much nicer to use.
Custom setting d2 (Viewfinder grid
Virtual horizon, this screen has little
506
Virtual horizon
Virtual horizon
Live View and