How is the product keystone correction？

The projector supports automatic keystone correction and manual four-point keystone correction.
Automatic Keystone Correction：
Press the setting button, select [Settings] ->[More Settings] -> [Projection Settings] -> [Keystone Correction->] -> [Auto Keystone Correction], select on. When the projector image is skewed, it will perform auto keystone correction to restore the image to a rectangle.
Please follow the detailed steps shown below:

Manual Four-point Keystone Correction:
1. If the projected image is stretched or distorted along both axes due to the projection angle, press the setting button, select [Settings]->[More Settings]->[Projection Correction]->[Keystone correction]->[Auto Keystone->], select off.
Please follow the detailed steps shown below:

2. Select [Settings]->[More Settings]->[Projection Correction]->[Keystone correction]->[4-Corner Correction], select the corner you want, and press the Navigation buttons on the remote control to adjust.