InFocus IN42ff User Manual page 18

Projector troubleshooting
Problem
Image not square
Image not sharp
A B A B
Image does not fit 16:9 screen
Solution
Adjust keystone the Picture menu
Adjust the focus ring or Sharpness in the
Picture>Advanced menu
Change aspect ratio to 16:9 in
Picture>Aspect ratio menu
17
Result
Square image
Correct image
A B
Correct image