ViewSonic Pro10100 - SETTING | Lens Function

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 Rear-Desktop and Rear-Ceiling are to be used with a translucent screen.
Menu Location
Choose the menu location on the display screen.
SETTING | Lens Function
Focus
Adjust focus function on the projected image.
Zoom
Adjust zoom function on the projected image.
Lens Shift
Shift the projected image.
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Lock: This function can not be used by user.
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Unlock: This function can be used by user.
Lens Calibration
Perform calibration and return lens to the center position.