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Why is 3840x2160 considered 4k?

Last response: in Other Consumer Electronics
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February 16, 2014 6:47:35 AM

Today we consider 1920x1080 1080p, and 1280x720 is considered 720p so they are both labelled by their width but with 4k 3840x2160 is only 2x more than 1080p so it is really 2k. but why do brands call it 4k and make tvs and projectors and cameras so overpriced almost 10x more expensive than a 1080p when they are only doubling the pixels?

More about : 3840x2160 considered

February 16, 2014 6:56:40 AM

Doubling?

Literally do the math.

1920x1080 = 2.7million pixels. So yes, 2K.

3840*2160 = almost 8.3millions pixels.

So yeah, not just double.
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February 16, 2014 7:05:39 AM

They call it 4k because 3840 rounded to the nearest thousand becomes 4000 (I guess it sounds more impressive to go by the horizontal resolution than by the vertical resolution). Also, like Novuake pointed out, it's double the pixels in each direction which comes out to quadruple the total pixels. Yes, the price is still more than quadruple, but I think that's because 4k tvs and monitors are still a bit of a niche market, and the production runs have been small. There could also be issues with the yield, the chips for signal processing have to be more powerful, and there are probably additional reasons for the extra expense.
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February 16, 2014 7:55:21 AM

Because marketing.
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