Nikon D780 DSLR Camera (Body Only) - Manual (Page 853)

807 Technical Notes
A Modeling Illumination
• Optional CLS-compatible flash units emit a modeling flash when the
camera
Pv button is pressed.
• This feature can be used with Advanced Wireless Lighting to preview
the total lighting effect achieved with multiple flash units.
• Modeling illumination can be turned off by selecting [ Off ] for Custom
Setting e5 [ Modeling flash ].