All about ULTRA-HD or 4K Displays

http://www.in.techradar.com/news/television/4K-TV-and-Ultra-HD-Everything-you-need-to-know/articleshow/40693789.cms

How many more pixels are we talking about?

About 8 million. Which is around four times what your current 1080p set can display. Think of your TV like a grid, with rows and columns. A full HD 1080p image is 1080 rows high and 1920 columns wide. A 4K image approximately doubles both those numbers, yielding approximately 4 times as many pixels total. To put it another way, you could fit every pixel from your 1080p set onto one quarter of a 4K screen.

Why is it called 4K?

Because the images are around 4,000 pixels wide. And before you ask, yes, the industry named 1080 resolution after image height, but named 4K after image width. For extra added fun, you also might hear this resolution referred to as 2160p. Welcome to the future. It’s confusing here.

Do all those extra pixels matter?

They matter very much. More pixels means more information. More information means sharper pictures. Sharper pictures are more engaging. More engaging content is more fun. And fun… well fun is the thing, isn’t it?

So I’ll see a huge difference?

That’s where it gets sticky. We’re talking about a similar jump in resolution as the one from SD (480 lines high) to HD (1080 lines high). And 4K screens are noticeably sharper than 1080p screens. But there are a few reasons you might not feel the same thrill you did when you upgraded your old CRT to a flatscreen.

When most people went from a 480 to a 1080p set, there was a good chance they were making a big jump in TV size as well. In terms of wow factor, display size is more powerful than any resolution jump could ever hope to be. Last time around most people got big jumps to both screen size and resolution. But this time screen sizes are staying about the same, with the most popular models falling in the 40 inch to 70 inch range.

Most importantly, though, you’ll only be able to see the resolution difference on a 4K set if you’re 1) watching 4K content through it and 2) you’re sitting close enough.

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