1) Does it matter how close or how far the lens is from the projector lens? Right now it is < 1" away. Would closer/farther be better?
2) I'm getting a weird warp on the upper left of the screen, i.e. the squares are widening as you go up the screen towards the edge of the screen. Any suggestions?
3) The focus adjustment seems to affect much more than focus: As I turn the image gets larger and larger and then the horizontal lines begin to bump up and/or down distorting the geometry of the squares in the test image. Is this normal?
4) I'm getting more curvature than I expected on a flat screen from a distance of about 16' with a JVC projector with ~ 52" image height. Is this a setup issue with the lens?
Anyone in Los Angeles with more experience want to help in trade for a free meal? some DVDs/CDs? ??
PS. For anyone wondering if masking panels are worth it the answer is a big "YES."
PSS. I can understand why people just go for a zooming setup--way easier and less costly. Perhaps I will experiment and see how bad the overspill on the wall is and see if I notice a loss of resolution.