Nikon S510 - Manual (Page 70)

58
The Movie Menu
Movi
e
s
Auto-focus Mode
Choose how the camera focuses in movie mode.
Option Description
A Single AF
(default setting)
Camera focuses when shutter-release button is pressed halfway
and locks at this position during shooting.
B Full-time AF
Camera focuses continuously until focus is acquired and locked.
To prevent sound of camera focusing from interfering with
recording, use of [Single AF] is recommended.