AVer FX3000R - Manual (Page 52)

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Name Function
(4) Zoom in To zoom in for focus adjusting
(5) Zoom out To zoom out for focus adjusting.
(6) Focus far side To adjust the far side of focus.
(7) Focus near side To adjust the near side of focus.
(8) Reset To reset the zoom back to the center of screen view in default value
(1x).
(9) Focus cursor A focus cursor; click the screen to set the focus point.
(10) Close Click to close the MFZ window.