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Join Date: Dec 2006
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There is a resolution loss with keystone, but the worst part of keystone seems to be the 1:1 pixel loss and the re-scaler algorithms which adds distortion to the re-mapping zones. The resolution loss is actually pretty minimal for 1-2 clicks on a 1080p projector.
I was trying to get people to test keystone in another thread and have everyone weigh in and tell me how bad the effects were at varying amounts for people buying sub $1500 projectors that didn't want to tilt their screen.
In short, what I found by playing with (5) different projectors is that the amount that Keystone affects an image is all over the place. It might not work as well in gaming since it could add lag or other visual side effects. However, my eyes are not the only set of eyes that would need to examine it, but others failed to contribute their own tests, so I wasn't able to make an absolute determination of what everyone sees.
But, when you can't use it in 3D mode, you can't use it, so it's not applicable here...