On 7 September 2011 11:07, Larry Colen <[email protected]> wrote: >. > > That one works with transparencies, i.e. slides, not digitally generated > images. >
Exchanging a digital projector for a slide projector would make no difference to the basic concept, after some technicalities were ironed out. Electronic flash in place of the usual mercury vapour or led lamp of the projector is also do-able. I once used a Durst 184 Laborator enlarger (10in x 10in coverage) which had its regular quartz halogen illumination swapped out for a Multiblitz pulsed xenon system. Anything is possible when your pockets are deep enough. > It also wouldn't work as a digitally controlled color spot with it's own gobo. > Once again, see my comment above about deep pockets. The filter receptacle in colour-spots is fairly large compared to the size of the LCDs in data projectors. The LCD from a laptop or out of a digital picture frame might be better, but I wonder what its life expectancy would be in this application. Actually, a programmable colour-spot projector isnt a bad idea, and I'd be surprised if it didn't already exist somewhere. It wouldn't project an image with any clarity, for that you need a perfectly aligned high-gain screen and a perfectly aligned front projector. It would be just fine for fuzzy, variable colour effects, though. But a data-projector/front projection unit is a step too far. That retro-technology just isn't needed anymore, unless you're shooting film, because green screen won't work. Why bother? If you want to drop in a background don't use film. Use a digital camera and a green screen. Easy-peasy. regards, Anthony "Of what use is lens and light to those who lack in mind and sight" (Anon) -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
