Nikon 775 - Manual (Page 103)

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Getting Good Results with Autofocus
Autofocus performs best when:
• There is contrast between the subject and the background. For example, autofocus may
not perform well on subjects that are the same color as the background.
• The subject is evenly lit.
Autofocus does not perform well when:
• You attempt to focus simultaneously on two or more objects at different distances from
the camera. For example, autofocus may not perform well when photographing an object
inside a cage , because the bars of the cage will be closer to the camera than the main
subject, and both the bars and the main subject will be in focus area at the center of the
frame.
• The subject is very dark (the subject should not, however, be too much brighter than the
background).
• The subject is moving rapidly.
If the camera is unable to focus using autofocus, use focus lock ( 53) to focus on another
subject at the same distance.