Nikon D7200, Руководство пользователя

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87
• 3D-tracking : Select the focus point as described on page 89. In
AF-A
and
AF-C
focus modes, the camera will track subjects that
leave the selected focus point and select new focus points as
required. Use to quickly compose pictures with subjects that
are moving erratically from side to side (e.g., tennis players). If
the subject leaves viewfinder, remove your finger from the
shutter-release button and recompose the photograph with
the subject in the selected focus point.
• Auto-area AF : The camera automatically
detects the subject and selects the
focus point (in the case of portrait
subjects, the camera is able to
distinguish the subject from the
background for improved subject
detection). The active focus points are
highlighted briefly after the camera focuses; in
AF-C mode or
when continuous-servo autofocus is selected in AF-A mode, the
main focus point remains highlighted after the other focus
points have turned off.
A
3D-tracking
When the shutter-release button is pressed halfway, the colors in the
area surrounding the focus point are stored in the camera.
Consequently 3D-tracking may not produce the desired results with
subjects that are similar in color to the background or that occupy a
very small area of the frame.