User manual INFOCUS KEYSTONE HOW TO

[. . . ] Keystoning - making the image a perfect rectangle There are four different ways to correct keystoning: 1) Adjust vertical or horizontal projection angle. [. . . ] (Some projectors have this feature. ) 4) Use lens shift in the projector menu. (Some projectors have this feature) Vertical Keystoning 90 Make sure the projector is on a flat surface that is perpendicular with the projection surface (wall or screen). This will ensure a rectangular image. To correct the keystoned image, decrease the vertical projection angle to level the projector. If image is too high on the wall, then adjust the projector height by lowering the projector. To correct the keystoned image, decrease the vertical projection angle to level the projector. If image is too low on the wall, then adjust the projector height by raising the projector. Horizontal Keystoning Make sure the lens is horizontally aligned with the center of the image or screen. This will ensure a rectangular image. Copyright © 1999-2005 InFocus Corporation. [. . . ] All Rights Reserved. To correct the skewed image, rotate the projector clockwise (rotate right) until the image is rectangular. To correct the skewed image, rotate the projector counter-clockwise (rotate left) until the image is rectangular. [. . . ]