Parameter Function
Zoom
WIDE Press minus key to make the focal length small
TELE Press plus key to make the focal length big
Speed
Including 1，5，20，100
Focus
NEAR
Press minus key to make the focal plane of the lens move to
close shot
FAR
Press plus key to make the focal lens move to move to long
shot
Speed
Including 1，5，20，100
Restore all Restore all, the value of both zoom and focus are reset as 0
Auto Focus
Adjust the focal plane of the lens to make the video image
stay the clearest.
Refresh Acquire the latest status of the zoom and focus
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