Nikon D810 User Manual page 116

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.
A
AF-Area Mode
AF-area mode is shown in the control panel and viewfinder.
Single-point AF
9-point dynamic-area AF
21-point dynamic-area AF
51-point dynamic-area AF
Group-area AF
* Only active focus point is displayed in the viewfinder. Remaining focus points provide
information to assist focus operation.
A
Manual Focus
Single-point AF is automatically selected when manual focus is used.
92
AF-area mode
3D-tracking
Auto-area AF
Control panel
*
*
*
Viewfinder