Thanks to this web site I puchased a Prismasonic V200 lens. What this does is to refocus a 4.3 projector screen to 16.9. Initial viewing indicates quantum leap in picture quality. It seems so much sharper and clearer. I can also increase the size of the picture with no loss in resolution. You simply set your DVD to 16.9. This allows the picture to take up all the 4.3 screen but with vertical size exagerated. This lens simply compresses the 4.3 to 16.9 so the picture is natural. The result is 33% more resolution. This does not seem much but it really does make a different! I see no evidence of picture distortion My only problem is the lack of adequate instructions but using your common sense it does not take too long to set up. I was thinking about replacing my NEC 1000 with a Sanyo Z2 because of the superior resolution. But this lens gives the best of both worlds - high quality of the NEC 1000 and the resolution of a Sanyo Z2. I urge those with 4.3 projectors to buy one!! Thanks to Prismasonic and to posters on this site who recommended this device to me! P.S I have no association with Prismasonic except as a satisfied customer!