Is it 4K Yet?

Any flat screen TV advertised as 4K will actually display the full 8 million pixels in a 4K (3840 x 2160) source. You can’t be certain about how well it will do a wider color gamut or high dynamic range—the other keystones of Ultra HD—but it will put 8 million discrete pixels on the screen. Whether or not the 4K source material is actually true 4K from the camera to your Ultra HD disc is a different issue for another discussion.

But with projectors there are two versions of 4K resolution…

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