Nikon D500 Settings Manual page 60

Diving
When photographing divers against
low-contrast, undifferentiated back-
grounds, choose 3D-tracking, posi-
tion the focus area over your subject
(for best results, choose the uniform
or another area of the subject that is a different color
from the background), and press and hold the AF-ON but-
ton or keep the shutter-release button pressed halfway.
The camera will automatically track the diver, letting you
concentrate on composition. When photographing div-
ers against the stands, billboards, and other high-contrast
backgrounds, select 72-point dynamic-area AF.
Low-contrast background High-contrast background
60