You can project an evenly rectangular image by placing
the projector directly in front of the center of the screen and
keeping it level. If you place the projector at an angle to the
screen, or tilted up or down, or off to the side, you may need to
correct the image shape for the best display quality.
Note: After
correction, your image is slightly smaller. For
the best quality images, try to adjust the projector's position to
achieve the correct image size and shape. After you have corrected
the position of the projector, you can use the adjustments in this
section to correct the image shape. You
cannot combine the H/V-Keystone
setting with other correction methods.