InFocus sp1080 User Manual page 16

Problem
Image not square
Image does not fit 4:3 or 16:9 screen
Image upside down
A
Solution
Adjust Keystone on keypad
Change aspect ratio to 4:3 or 16:9 in Basic Menu >
Aspect Ratio menu
Turn off Ceiling Mount in Basic menu
15
Result
Square image
Correct image
Correct image