Nikon D500 用户手册

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页码 428
104
• 3D-tracking
*
: Select the focus point as described on page 108. In 
AF-C
 focus mode, 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.
• Group-area AF: The camera focuses using a group of focus points 
selected by the user, reducing the risk of the camera focusing 
on the background instead of on the main subject. Choose for 
subjects that are difficult to photograph using a single focus 
point. If faces are detected in AF-S focus mode, the camera will 
give priority to portrait subjects.
• Auto-area AF: The camera automatically 
detects the subject and selects the 
focus point; if a face is detected, the 
camera will give priority to the portrait 
subject. The active focus points are 
highlighted briefly after the camera 
focuses; in AF-C mode, the main focus 
point is displayed after the other focus points have turned off.
* Note that when 
1.3× (18×12) is selected for Choose image area (
0 89), the 
camera focuses using 117 focus points. The remaining focus points at the left and right edges of 
the focus point display are not used.