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 (PowerLite Pro G6800/G6900WU).
  1. Turn on the projector and display an image.
    Note: You can display a pattern to aid in adjusting the projected image using the Settings menu.
    Note: The image may not be evenly focused throughout even after performing the steps below.
  2. Press the Menu button.
  3. Select the Settings menu and press Enter.


  4. Select the Geometric Correction setting and press Enter.
  5. Select the Corner Wall setting and press Enter.
    Note: If you see a confirmation message to continue, press Enter again.
    You see this screen:


  6. Select the Corner Type setting and press Enter.
  7. Select one of the following:
    • Horizontal Corner when the surfaces line up horizontally


    • Vertical Corner when the surfaces line up vertically


  8. Press the Esc button to return to the Corner Wall menu screen.
  9. Select the Correct Shape setting and press Enter.
  10. Adjust the projector's position and use the lens shift option to center the image over the corner of the wall or the point where the two surface areas meet. (The rest of these steps shows Horizontal Corner as the selected Corner Type but the workflow is the same for Vertical Corner.)


    Note: You can press Enter to show or hide the image and grid to check the results.
  11. Use the arrow buttons on the projector or the remote control to select the area you want to adjust. Then press Enter.


    Tip: When Horizontal Corner is selected, adjust the top area by using the lowest point (indicated by the blue arrow) as your reference and adjusting the areas indicated by the top two black arrows. Adjust the lower area by using the highest point (indicated by the red arrow) as your reference and adjusting the areas indicated by the bottom two black arrows.


    When Vertical Corner is selected, adjust the left and right areas using the points nearest the center of the image as your reference points.

    Note: To reset your Corner Wall adjustments, press the Esc button for at least 2 seconds to display a reset screen, then select Yes.
  12. Use the arrow buttons on the projector or remote control to adjust the shape.
  13. Repeat the previous two steps as necessary to adjust any remaining image parts. If the image expands or contracts, continue with the next step to adjust the linearity.
  14. Press the Esc button to return to the Corner Wall menu screen.
  15. Select the Linearity setting and press Enter.
  16. Adjust the linearity by doing the following:
    • Press the left arrow button to shrink or contract the distance between the lines closest to the left or top side of the image


    • Press the right arrow button to shrink or contract the distance between the lines closest to the right or bottom side of the image


  17. When you are finished, press Menu to exit.
Note: If necessary, you can fine tune the results of your Corner Wall adjustments using Point Correction.
Related tasks
Displaying a Test Pattern
Correcting Image Shape with Point Correction
Related references
Projector Feature Settings - Settings Menu