Unfortunately the only one that literally does NOT require 2 separate screens (silver screen for 3D and 1.0 gain screen for 2D) is the Titan at US$85k. Even then I'd suggest to use 1.3 gain screen for 3D running dual-bulb at 100% and for 2D running single-bulb at 80%.
Everything else that offers 3D won't have enough light output to use a single screen and run both 2D and 3D at 16 ftL.
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