Nikon Digital Camera user manual Using Autofocus in Live View

DUsing Autofocus in Live View

Autofocus is slower in live view and the monitor may brighten or darken while the camera focuses. The camera may be unable to focus in the following situations:

•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, or the subject is lit by spot lighting or by 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

Note that the focus point may sometimes be displayed in green when the camera is unable to focus.

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