But if it doesn't bother you in the theater, then it probably won't bother you at home. The polarized filters are never 100% perfect at blocking all of the light from one of the projectors, so if there is a dark scene and a bright object, some light on the edge of the bright object might be seen with the wrong eye. What are the disadvantages to a polarized setup? First, crosstalk can be an issue with dark scenes. ![]() The cost is comparable to a single 46" 3D-ready TV, which will require at least one pair of expensive glasses to operate. While this might seem like a lot, keep in mind that 720p projectors can be had for under $1,000, meaning the total cost of this setup can be kept well under $3,000 with little effort. On top of that, you'll need a polarized-compatible screen and polarized filters for each of the projectors. ![]() A dual-projector system requires two projectors, which is a significant expense. What's the downside? The up-front costs are much greater.
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