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Are 4k TVs Worth It?

   
        Shows | TechStuff

An employee of Japanese electronics giant Sharp performs inspections on AQUOS 4K televisions in a room set at 40 degrees Celsius at the company's Tochigi Plant in Yaita, Tochigi prefecture on November 19, 2015.  Kazuhiro Nogi/AFP/Getty Images
An employee of Japanese electronics giant Sharp performs inspections on AQUOS 4K televisions in a room set at 40 degrees Celsius at the company's Tochigi Plant in Yaita, Tochigi prefecture on November 19, 2015. Kazuhiro Nogi/AFP/Getty Images

What exactly is 4k resolution? How does the number of pixels on a screen correspond to image quality? And are 4k sets really worth it?