2Next, determine the left-right position of the ceiling mount in relation to the screen. Mark the ceiling at a point aligned as closely as possible to the middle of the screen.
Note
Try to keep the lens within 8 inches left or right of the screen’s center. You can then use the horizontal lens shift dial to position the image on the screen. If you position it off-center by more than that, the vertical (up/down) lens shift adjustment will be limited. Conversely, if you don’t need to use the projector’s full vertical lens shift, then you can position the lens more than 8 inches off-center, if necessary.
Overhead view
Lens
8"
8"
Try to keep lens within 8 inches left or right of screen’s center
Align ceiling mount with screen’s center
