4k Screen? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 6 Old 09-10-2019, 06:46 PM - Thread Starter
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4k Screen?

What is the real effect of a "HD(1080p)" vs a "4k" screen with a 4k projector like the Epson 5050UB? What kind of artifacts/anomalies would I expect to see with the 1080p rated screen?
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post #2 of 6 Old 09-10-2019, 09:28 PM
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Texture/Gain artifacts impart a sparkly effect most noticeable in bright scenes, solid colors, and panning shots. With an artifact free screen like Stewarts Snomatte, the screen will be invisible. A screen labeled 4k may still have texture/gain artifacts, like elites cinewhite or silver tickets white.
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post #3 of 6 Old 09-11-2019, 01:13 PM
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There is no industry standard for projection screen resolution capability so marketing departments can say whatever they want. The better screen companies tend to be more honest about how well their various screen materials will handle increasingly finer resolution.
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post #4 of 6 Old 09-11-2019, 05:32 PM
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Quote:
Originally Posted by bk View Post
What is the real effect of a "HD(1080p)" vs a "4k" screen with a 4k projector like the Epson 5050UB? What kind of artifacts/anomalies would I expect to see with the 1080p rated screen?
You would see a distortion to the pixel's geometry due to the texture on the "non 4k" screen surface. Here is an infographic with some images and more detail:
https://www.projectorscreen.com/blog...aces-Explained
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post #5 of 6 Old 09-11-2019, 05:36 PM
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Quote:
Originally Posted by Dave in Green View Post
There is no industry standard for projection screen resolution capability so marketing departments can say whatever they want. The better screen companies tend to be more honest about how well their various screen materials will handle increasingly finer resolution.
Unfortunately, that is the case

Here is a video produced by Da-lite which gets into detail on how they rate their surfaces at 16k. It references guidelines produced by the USAF regarding resolution of "line pairs":


They definitely did not dumb it down to make it easily digestible. Long story short, if they can resolve the required amount of line pairs then the surface can resolve the corresponding resolution. (6 line pairs per millimeter = 16k resolution if you have a 10' wide screen which would be necessary in order to fit the required amount of pixels)
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post #6 of 6 Old 09-12-2019, 03:58 AM - Thread Starter
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Thanks for all the really useful info.
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