一般在市场里,我们见到的常见4K分辨率有3840×2160与4096×2160两种规格的标准,其实,前者是消费电视或显示器的标准,后者则是用于数字影视领域的DCI标准。此外还有Full Aperture 4K的4096×3112、Academy 4K的3656×2664等不同标准。不同的“4K标准”增加了消费者的选择成本
虽然在流媒体领域4K分辨率并没有一个绝对的标准,不过可供参考的是广播电视领域对清晰度的标准划分:
UHD(Ultra High-Definition ,超高清 ):4K、8KFHD(Full High Definition,全高清):1080i、1080pHD(High Definition,高清):720PSD (Standard Definition,标清):480P
这里跟大家贴一个维基上对4K的解释:
4K resolution, also called 4K, refers to a horizontal display resolution of approximately 4,000 pixels. Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 3840×2160 (4K UHD) is the dominant 4K standard, whereas the movie projection industry uses 4096×2160 (DCI 4K).The 4K television market share increased as prices fell dramatically during 2014 and 2015. By 2020, more than half of U.S. households are expected to have 4K-capable TVs, a much faster adoption rate than that of Full HD (1080p).