Reference Manual

Table Of Contents
53Basic Settings
D Autofocus
The display may brighten or darken while the camera focuses and the
focus point may sometimes be displayed in green when the camera is
unable to focus. The camera may be unable to focus using autofocus 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 includes 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)
D Turning the Camera Off
The focus position may change if you turn the camera off and then on
again after focusing.