Epson Pro L30002UNL 30,000-Lumen HDR Pixel-Shift DCI 4K Laser 3LCD Large Venue Projector (White) - Manual (Page 145)

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Correcting Image Shape with Corner Wall
You can use the projector's Corner Wall setting to adjust the shape of an image projected on a surface
with right angles, such as a rectangular pillar or the corner of a room.
Note: For the best results, project from the front of the screen onto a right-angled surface. The image
may not be evenly focused throughout even after performing the steps here.
Note: If 4K Enhancemen t is enabled, a message is displayed. Select Yes to disable 4K Enhancement .
1. Turn on the projector and display an image.
2. Press the Geometry button on the projector control panel or remote control.
3. Select the Corner Wall setting and press Enter .
Note: If you see a confirmation message, press Enter .
You see this screen:
4. Select Corner Wall again and press Enter.