InFocus LP280 User Manual page 31

Keystone
This option helps to keep the image square as the angle of projec-
tion is changed. Use this feature to adjust the image vertically
and make a squarer image. See page 19 for details on keystone
adjustments.
1 Press the down button to highlight Keystone, then press
. Use the left and right arrows to adjust the key-
Source/Select
stone setting from -63 to 63 in the slider bar. Press
to accept your changes.
Source/Select
Setup
See the following pages for details on this menu.
Reset
This resets the picutre settings like brightness and contrast.
About
This read-only menu provides information about the source, such
as resolution and horizontal and vertical frequencies.
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