What is 4K?
4K resolution or 4K denotes a display device or content with horizontal resolution on the order of 4,000 pixels. A "display" could be the screen on a TV, iPad or laptop. The Consumer Electronics Association (CEA) defines an Ultra HD television as one that displays at least 8 million active pixels, with a lower resolution boundary of at least 3,840 by 2,160. There are multiple varieties of 4K digital content ranging from 3,840 by 2,160 to 4,096 by 3,112. However, the 3,840 by 2,160 resolution is the most consistent number.
Ultra High Definition (UHD)
Basically, with more pixels, the images look sharper and more realistic. However, the individual pixels make the images look blocky and less natural. Hence, it is preferred to have displays with a higher resolution, and 4K is a very high resolution. That's why it's sometimes also known as "Ultra High Definition". Collectively, the format was originally known as 4K, and while the CEA officially changed its designation to Ultra HD, the 4K tag is more known and both terms are effectively interchangeable.
Now shipping: Arecont MegaVideo 4K with SNAPstream, NightView and WDR The 8.3MP/1080p MegaVideo® 4K dual...Arecont Vision IP cameras | Arecont Vision
Dallmeier DF5400HD-DN/IR Ultraline 4K camera The DF5400HD-DN/IR has been designed...Dallmeier CCTV cameras | Dallmeier electronic GmbH & Co.KG
Arecont Vision MegaDome 4K IP megapixel camera - AV08ZMD-400 The 8.3MP/1080p MegaDome® 4K...Arecont Vision IP Dome cameras | Arecont Vision
DDF5400HDV-DN Ultraline: Dallmeier presents 4K Ultra HD camera With the new DDF5400HDV-DN...Dallmeier IP Dome cameras | Dallmeier electronic GmbH & Co.KG
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Hikvision H.264+ Smart Codec powers 4K total system Hikvision, the global leader in innovative video...Hikvision IP cameras | Hikvision
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