Hi Cynthia –
I have some good and spotty information. Sorry to say which projector type or manufacturer you choose is not going to be as critical as the lumens of that projector and a great lens (typically sold separately). If possible, reach out to someone locally that does Audio-Visual rentals. You may have to do a little digging but it's always best to have a local source. I have projected scenery many times over the years and there are three critical things to keep in mind when rear projecting images or video onstage.
Len size – typically calculated by the size of the image you want to project and the distance you have to the back or the screen… Extremely important as this calculation affects the sharpness & brightness of the image necessary to punch through stage light.
Projector Lumens – goes hand-in-hand with the lens ratio and distance. The lumens of the projector needs to be symbiotic with the lens size to ensure a great image quality
Rear projection material – Typically you need to use a rear screen projection material rather than a scrim. (Here is a link to Rose Brands material (https://www.rosebrand.com/product703/Projection-Screen-and-Rear-Projection-Screen.aspx) Rose Brand also sells something called "Super Sheer" which in IFR and come 16'-4" wide (purchase by the yard). Most Stage Fabric companies will have materials similar to the examples I referenced and their salespeople are usually happy to answer any questions you might have. The closest one I know of near you is Norcostco (https://norcostco.com/fabric/) in Minneapolis...
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