Adjusting The Zoom / Focus - Optoma TX779 Manual

Installation
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Adjusting the Zoom / Focus

You may turn the zoom ring to zoom in or out. To focus the image,
rotate the focus ring until the image is clear. The projector will focus
at distances. See pages 19.
Use the keystone buttons to
correct image distortion. They can be found on the remote
control and on the projector's control panel.
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