| Calvin wrote: Quote:... The blue filter eliminates the blue image ... No, it doesn't... and here's why: In a red/blue 3D projection, the blue image is composed entirely of blue light, because its projector lens has a blue filter over it. And, naturally, what the blue projector lens passes intact (i.e., an image built of varying amounts of blue light) the blue viewer lens does as well. The red viewer lens, meanwhile, lets *no* blue light through (...and, thus, sees no "variability" to the blue light with which to construct an image). Again, this description does *not* apply to colored images on white paper in a lighted room ...where everything's more-or-less reversed... -- /---------------------------\ | YOUR taste at work... | | | | http://www.moviepig.com | \---------------------------/ |