I'm thinking of using an old LCD- or DLP- projector as a light source for my MF enlarger. With such a light source and a notebook one can literally paint masks for dodging, burning and local contrast contol, all in one mask that can be stored and used later. It seems to be a great tool, some blend of digital enlarger and an analog one. Resolutions of 640x480 or 800x600 seem to be enough for the purpose. Is it a weird idea? Can anybody suggest possible pitfalls? First of all, it would be hard to obtain extreme paper grades, but they are rarely used anyway. Second, projector lenses are designed to focus at long distances, and mask may become blurred to a degree that makes it useless.