How far from the screen does the projector and UH480 lens assembly need to be mounted?
First, there is the issue of focus. The UH480 lens is engineered to give optimum sharpness and full graphics level performance when mounted between about 14.5 to 17.5 from the screen. This was a deliberate design choice, as experience has shown us that the vast majority of projectors are installed within that mounting distance. Mounting the lens within those limits will reveal full 1080P pixel level sharpness even with critical test patterns. Practically, however, the UH480 lens can be used from about 12 to 22 feet without any noticeable loss of sharpness with even high definition movies. For those wanting pixel level performance at distances greater than 17.5, we offer optional UH480 Long Throw Conversion Kits at additional cost. The second part of the answer has to do with throw ratios. We recommend a throw ratio of at least 1.6X the width of the native 16:9 image thrown by the projector (just to make that clear, throw ratio is NOT calculated based on the width of the 2.35:1 image yo
