Quote:
Originally posted by patmyhead I have cut hole in wall between armchairs for sony to sit to keep wife happy this means the PJ is about 18" off centre |
Your question was "what have I done wrong", and your post contains the answer.
To get a properly rectangular picture, the projector lens MUST be positioned laterally centrally to the screen, ie, if you measure the distance from one side (vertical edge) of the screen to the lens, it should be exactly the same measurement as to the other side of the screen.
If you MUST have the projector mounted where it is, then your only other choice is to laterally angle the screen so that these two distances are equal. You won't get a "square" picture without getting the lateral position right.