The projector is native 16:9 so unless you have content that is formatted in 2:40 (still in a 16:9 container ) you can't fill the a 2:40 screen. You need to use what's called the zoom method to achieve the CIH solution. First make sure you have a square picture with no trapezoids and this is done using the roll, pitch and yaw of the projector mount. Use lens shift and zoom to fill a 16:9 image filling top and bottom of your screen with black bars even on each side. I would be glade to call you just setup a time.