2. Projecting an Image (Basic Operation)282-6. Correcting Keystone Distortion [KEYSTONE]When the projector is not exactly perpendicular to the screen, keystone distortion occurs. For cor-recting this distortion, you can use the “Keystone” function, a digital technology that can adjust forkeystone-type distortion, resulting in a crisp, square image.The following procedure explains how to use the [KEYSTONE] screen from the menu to correcttrapezoidal distortions when the projector is placed diagonally to the screen.Before performing KEYSTONE correctionThe [KEYSTONE] correction has four features, [KEYSTONE HORIZONTAL], [KEYSTONE VERTICAL],[PINCUSHION LEFT/RIGHT], [PINCUSHION TOP/BOTTOM], and [CORNERSTONE]. If the value ofeither [CORNERSTONE] or [PINCUSHION] has corrected, [KEYSTONE HORIZONTAL] and [KEYSTONEVERTICAL] are disabled. In this case, RESET the corrected values and restart to correct distortion.1. Press the ▼ button on the projector cabinet.The [KEYSTONE] screen will be displayed onthe screen.• Press the KEYSTONE button when usingthe remote control.• See page 39 for [PINCUSHION].• See page 37 for [CORNERSTONE].• See page 29 for [RESET].2. Press the ▼ button to select [KEYSTONEVERTICAL] and then use the ◀ or ▶ so thatthe left and right sides of the projectedimage are parallel.• Adjust the vertical keystone distortion.Projected areaScreen frame3. Align the left (or right) side of the screenwith the left (or right) side of the projectedimage.• Use the shorter side of the projected im-age as the base.• In the right example, use the left side asthe base. Align left side
