Re: DIY Screen Paint
The same paint will work the same way on the wall or on cloth you stretched over a frame or on a "real" screen that is now too shabby to use as-is or whose color/texture you wish to change.
When you use a wall for your screen, you may notice that the surface is not as good as it first looked.
At one time, in addition, I thought that if Brand X paint looks the same as Brand Y paint after being brushed on a surface and let to dry (including any sheen you may see when looking at the surface at an angle, then the performances of screens with those respective paints is going to be the same. So if DIY Theater sells a paint for X dollars and Home Depot sells what looks the same for Y dollars that is less, then I would just as well go to Home Depot.
To me, choosing a screen paint is just like choosing a piece of equipment, you have to read magazine reviews and/or get comments from friends, etc. and/or analyze light absorption figures and/or just use trial and error. Add to that the numerous permutations of screen (paint) color versus projector light output versus picture area in square feet versus how optically lively (having light/dark furnishings) the room is.
Video hints:
Video Technicalia Made Easy