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Every new year we are familiar with some of the
technology gives us just such a surprise, some of them make questions to our
mind, what is it? is it possible? 4K is the latest video technology that
promises a better quality picture when you're watching movies or TV shows. But
how does 4K work, and what does it mean for you?
The term "4K" refers to the resolution of
an electronic display. A "display" could be the screen on your TV,
your iPad or your laptop, and "resolution" means how many pixels
there are in that display.
Pixels are the dots that make up on-screen images,
and the more pixels there are, the sharper and more realistic images look. When
we can see individual pixels, images look blocky and less lifelike, so we
usually prefer displays with a higher resolution, and 4K is a very high
resolution indeed. That's why it's sometimes known as "Ultra High
Definition".
A High Definition TV with 1080p resolution is composed of two
million pixels (1920 x 1080), while a 4K TV (aka Ultra High Definition) has over
eight million pixels (3840 x 2160). Therefore, 4K has around four times more
resolution than 1080p and produces a clearer picture.
In terms of tech products you can buy like TVs, 4K
normally refers to a resolution that has 3,840 pixels along the horizontal line
of the display, and 2,160 pixels vertically.
The name 4K comes from the fact that there are
roughly four thousand pixels on the horizontal side, which gives 4K four times
as high a resolution as 1080p, which is what we normally mean today when we describe
a screen as "Full HD".
Tips:
Do I Need 4K?
Not yet, unless you're an early adopter with the
cash to spend and plenty of patience. In which case, the answer is probably
still not yet. Think of 4K as something mainstream consumers could be watching
in the next several years. Early adopters and enthusiasts may be interested
sooner, if the costs come down enough and there's enough content available.
It's already pretty clear 4K won't end up like the
3D fad in there not being enough good content available to watch, even years
after the technology's debut. 4K has a much better chance of becoming
mainstream, because it doesn't need special glasses, and because some movie
studios are already defaulting to shooting in it and promising a broad base of
available content down the line. Bottom line: For most of us, however
tantalizing that 4K logo may seem, it's not a realistic proposition in the
immediate future. It's something to keep an eye on further down the line.
