Chapter 4 Settings — [POSITION] menu82 - ENGLISH[CURVED][VERTICAL BALANCE] [HORIZONTAL BALANCE][MAINTAIN ASPECT RATIO]Select [ON] to correct while keeping the aspect ratio.Setting [CORNER CORRECTION]1) Press as to select [GEOMETRY(2D)].2) Press qw to select [CORNER CORRECTION].3) Press the button.f The [GEOMETRY:CORNER CORRECTION] screen is displayed.4) Press as to select the item to adjust, and press the button.5) Press asqw to adjust.[CORNER CORRECTION][UPPER LEFT] [UPPER RIGHT] [LOWER LEFT] [LOWER RIGHT][LINEARITY]Horizontal direction Vertical directionNotef The menu or logo may run off the screen when [GEOMETRY(2D)] is set.f If [EDGE BLENDING] (x page 86) adjustment and [GEOMETRY(2D)] are used together, correct edge blending adjustment may not bepossible in certain environments.f The optional Upgrade Kit (Model No.: ET-UK20) can be used to expand the correctable range. To purchase the product, consult your dealer.f [GEOMETRY(2D)] is selectable only when a 2D image is displayed. The setting is invalid while a 3D image is displayed. When executingthe keystone correction while displaying a 3D image, set with [KEYSTONE(3D)].However, if [3D SYSTEM SETTING] is set to [DUAL (LEFT)] or [DUAL (RIGHT)], the keystone correction becomes possible by selecting[GEOMETRY(2D)] while a 3D image is displayed.[KEYSTONE(3D)](Only for PT-DZ870E)While displaying a 3D image, corrects the keystone distortion that occurs when the projector is installed tilted or when the screen is tilted.1) Press as to select [KEYSTONE(3D)].2) Press the button.f The [KEYSTONE(3D)] screen is displayed.3) Press as to select the item to adjust.4) Press qw to adjust.