4K resolution facts for kids
4K resolution talks about a horizontal display resolution of about 4,000 pixels. Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 3840x2160 (4K UHD) is a common 4K standard. The movie projection industry uses 4096x2160 (DCI 4K).
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4K resolution Facts for Kids. Kiddle Encyclopedia.