Epson Pro L30002UNL 30,000-Lumen HDR Pixel-Shift DCI 4K Laser 3LCD Large Venue Projector (White) - Manual (Page 136)

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Correcting Image Shape with H/V Keystone
You can use the projector's H/V Keystone setting to correct the shape of an image that is unevenly
rectangular on the sides.
Note: You cannot combine H/V Keystone correction with other image shape correction methods.
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 H/V-Keystone setting and press Enter . Then press Enter again.
You see the H/V-Keystone adjustment screen:
Note: You can also access the H/V Keystone setting by pressing the Menu button and selecting
Geometry Correction on the Settings menu.