4K is 4096x2160 and is currently limited to cinema. The TV format is often called 4K but is technically UltraHD and is 3840x2160.
There’s a lot of streaming content in UHD; the biggest questions are how close are you going to sit to your TV and how big is it? This chart shows the tipping point..
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There’s a lot of streaming content in UHD; the biggest questions are how close are you going to sit to your TV and how big is it? This chart shows the tipping point..
http://s3.carltonbale.com/resolution_chart.html