4K解析度(4K resolution),或簡稱作4K,是指显示器或顯示內容的水平解像度達到4000像素的級別、而垂直解像度達到2000像素的級別。 現時在數碼電視及數碼攝影的領域裡出現多種4K解析度。 In television and consumer media, 4K UHD or UHD-1 is the dominant 4K standard. By 2015, 4K television market share had increased greatly as prices fell dramatically during 2014 and 2015. By 2025, more than half of US households are expected to have a 4K-capable TV (2160p), which would be much faster than the adoption curve of FullHD (1080p). 新興的數位電影及電腦視訊的超高解析度標準,以搭配超高畫質電視,常見的解析度有3840×2160和4096×2160畫素2種規格。「4K」名稱得自其水平方向的畫面。
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