I have tried this with both Plexiglass and Lexan. Plexiglass doesn't "scuff" the same as Lexan, and I preferred the look of the Lexan. Much less of a hot spot. Plexiglass is not nearly as tough as Lexan, and an impact will break it. Most "bulletproof" (bullet resistant, actually) "glass" these days is made out of this material. The thicker the material the higher rating it gets for stopping bullets. The bullet goes it and melts the plastic as it goes and gets caught. Many retailers of Lexan have little displays where you are invited to beat on a square of the material with a hammer. Anyway, the bottom line is that this type of screen is about as bright as regular ground glass. It can have some texture to it, depending on how much time you want to spend scuffing it up, but this is a minor distraction. You can go with sandpaper, rubbing compound or whatever to suit your taste. With 600 grade sandpaper, the image (in 5X7 anyway) is fairly even with no distracting hotspot or need to move your hand around to see the corners. I have checked for indexing error on my cameras and as long as you use the right thickness and put it in the right way, it is right on the money.