ViewSonic VS18991 User Manual page 68

Menu
Language
Projector Position
Keystone
Warping
Focus
Eye Protection
Test Pattern
Select your desired language.
Select the preferred projection position.
4 Corner
Enable/Disable 4 Corner Adjustment.
4 Corner Adjustment
Adjust each corner individually for maximum
projection flexibility.
Image adjustment for curved surfaces.
Adjust the focus of the screen image.
Use the Directional buttons on the remote control to
adjust the focus.
To protect eyes from the direct light of the projector,
when an object gets close to the lens, a sensor will
detect it and automatically turn off the light.
NOTE: When the Eye Protection feature is
activated, press any button on the remote
control to cancel it.
Test the color presentation of the projector and/or
adjust the focus of the projected image.
68
Description