Nikon D800 Technical Manual page 11

Why Use Live View?
3. Zoom in for precise focus.
Press the X button to magnify the
view in the monitor by up to 23×
for precise focusing with live view.
This is particularly eff ective with
manual focus.
A navigation window will appear
in a gray frame at the bottom of
the display. Use the multi selector
to scroll to areas of the frame not
visible in the monitor.
X button
Navigation window
Still Subjects
9