A fast-throw camera can produce very high-resolution images at a small distance and therefore fit in places where traditional projectors do not match. A projector requires approximately 1-inch wall height to cover every inch of diagonal screen width. If your image is 10 inches long, you need between 8 and 10 feet between screen and projector. It is possible to create an equivalent-size picture within ten feet of a display. They can sit at tables or shelves near the wall to eliminate the need to hang them from the ceiling.