It’s official: the Consumer Electronics Association has announcedits industry definition for High Dynamic Range compatible video displays. In doing so, the CEA has set a standard for consumers and retailers to rely on when buying a HDR compatible display, be it a TV set, monitor, or video projector. Compared to standard HD, HDR TVs offer much greater contrast between light and dark images, thus providing a far more realistic viewing experience.
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http://www.tvtechnology.com/broadcast-engineering/0029/is-hdr-worth-it/277168