PTZ Controller v3 provides 3 ways to control PTZ Camera Focus.
3 ways to control Focus:
- Click the Auto/Manual bar
to select control focus automatically or manually. The focus near 
and focus far 
buttons are available for manual control only. - Use Keyboard Shortcuts,
for focus near, 
for focus far. - If joystick or gamepad is connected, you can also control focus with joystick or gamepad.