Sony VPL-DX270 Guide De Référence Rapide page 52

Correcting trapezoidal distortion of the projected image (Keystone feature)
Keystone feature may not work automatically
keystone manually.
1 Press the KEYSTONE key on the remote commander or select V Keystone in the Installation
menu.
2 Use the V/v/B/b the keys to set the value. The higher the value, the narrower the top of the
projected image. The lower the value, the narrower the bottom.
Notes
*1: Since the Keystone adjustment is an electronic correction, the image may be deteriorated.
*2: VPL-DX270/DX240/DW240 only.
Automatically adjusts Phase, Pitch and Shift of projected image while a
signal is input from a computer (APA (Auto Pixel Alignment))
Press the APA key on the remote commander. Press again to cancel adjusting during the setting.
You can also set APA in the Screen Menu. If Smart APA in the Function menu is set to "On",
executes APA automatically when a signal is input.
20
GB
Projecting
*2
when the screen is tilted. In this case, set
Increase the number
towards plus
Increase the number
towards minus
*1