Nikon D780 DSLR Camera (Body Only) - Manual (Page 151)

105 Camera Controls
To stop the lens down to the selected
aperture and preview depth of field
during shooting, press and hold the
Pv
button.
• Optional flash units compatible with
the Nikon Creative Lighting System
(CLS) will emit a modeling flash. The modeling flash can be
disabled by selecting [
Off ] for Custom Setting e5 [ Modeling
flash ].
• You can choose the role assigned to the Pv button. Use
Custom Settings f3 [ Custom controls ] and g2 [ Custom
controls ] in the Custom Settings menu to choose the roles
played by the button during photography and movie
recording, respectively.
D The Pv Button
The Pv button may be disabled in some shooting modes or when certain
conditions apply.
The Pv Button