Spandex for rear projection will work BUT you need to place the projector in a position that it is below or above the audience view. Typically I would either place it on the floor or above and just keystone correct. The Problem as Van pointed out is that if you position it "straight on " it is beaming directly into the audience's eyes.
There is a material called Trapeze that has more "density"
Dazian
In General, it works better with Front Projection.
Ok got a good one for someone.. I am trying to project words from behind a off white spandex sail type . will a small projector about 5-6 feet back work , has anyone done this through spandex yet thanks for any help...
It appears that you are trying to rear project text that can be read on a triangular shaped spandex 'sail' that is 5' to 6' in front of a wall. I don't think that has really been addressed but can you get an adequate image size with that surface size and shape and the throw distance possible? How far away is the furthest viewer from the images? Is 5' and 6' indeed the room you have to fit a projector behind the 'sail'? What format (4:3, 16:10, 16:9) image are you trying to project? Do you have a projector or any limits on the projector possible? What size text, as in font size in the graphic, do you plan on projecting? Is there masking or anything else around the sails so that someone on one side does not see the projector for the other side?Hey guys thanks for the advice the "sails" are 21' on the left side and 18 ' on the right side and 8' at the top and tapers down to a point on the ground. The top has a lot of surface area to project on and the projected area is about 25' - 30 ' in the air, so sight lines are no problem and I should have no light in the eyes of anybody in the house , I was concerned with punching light through the spandex wondering if a regular small video projector will work ?
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