Things To Know - Resolution and Definition

What is resolution, and how does it affect image clarity?
Resolution refers to the number of pixels per inch that a screen can display, and it's the main thing that sets High Definition apart from Standard Definition. All flat panel LCDs and plasmas are what's called "fixed-pixel" displays, which means they use pixels to display an image. HDTVs are quantified by the number of pixels per vertical line – so a TV designated as "720" has 720 vertical pixels, and a TV designated as "1080" has 1080 vertical pixels. TVs with a higher pixel count have a higher resolution, and therefore produce a clearer, more detailed image, than those with a lower pixel count.         

What's the difference between Standard Definition and High Definition?
Standard Definition Television (SDTV) is the TV you grew up watching. With a resolution of 480 pixels per inch and an aspect ratio of either 4:3 or 16:9, SDTV broadcasts were the norm for many years. High Definition Television (HDTV) was introduced in 1998, and it's gained traction very quickly. HDTV broadcasts have a resolution of up to 1080, for a more detailed, realistic picture. HD has become the de facto standard for newly manufactured television sets, which offer a slew of technical features to provide the most immersive TV viewing experience ever.

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