Nikon D780 DSLR Camera (Body Only) - Manual (Page 198)

152 Shooting Settings
D Using Autofocus in Live View
• The camera may be unable to focus if:
- The subject contains lines parallel to the long edge of the frame
- The subject lacks contrast
- The subject in the focus point contains areas of sharply contrasting
brightness
- The focus point includes night-time spot lighting or a neon sign or
other light source that changes in brightness
- Flicker or banding appears under fluorescent, mercury-vapor,
sodium-vapor, or similar lighting
- A cross (star) filter or other special filter is used
- The subject appears smaller than the focus point
- The subject is dominated by regular geometric patterns (e.g., blinds
or a row of windows in a skyscraper)
- The subject is moving
• The monitor may brighten or darken while the camera focuses.
• The focus point may sometimes be displayed in green when the camera
is unable to focus.
• Use an AF-S or AF-P lens. The desired results may not be achieved with
other lenses or teleconverters.