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.
Dallmeier DF5400HD-DN/IR Ultraline 4K camera The DF5400HD-DN/IR has been designed...Dallmeier CCTV cameras | Dallmeier electronic GmbH & Co.KG
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LTV introduces 4K series product portfolio LTV, medium-sized manufacturer of video...LTV Europe IP Dome cameras | LTV Europe Sicherheitstechnik GmbH
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Hikvision H.264+ Smart Codec powers 4K total system Hikvision, the global leader in innovative video...Hikvision IP cameras | Hikvision
Dahua's 4K ultra-HD network camera series Dahua Technology, a world-leading...Dahua Technology IP Dome cameras | Dahua Technology Ltd
Hikvision DS-2CD4A85-IZH 4K bullet camera 4K ResolutionLoaded with intelligent features for...Hikvision IP cameras | Hikvision
Dahua Technology NVR4832-4K network video recorder – ultra display performance and decoding ability Dahua DH-NVR4832-4K has up to 32 channel...Dahua Technology Network Video Recorders (NVRs) | Dahua Technology Ltd
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