From there, trim passes were made at more common luminance levels-1,000 nits, for example. Patterns and content were mastered with a peak luminance value of 10,000 nits to exploit the HDR format's full potential. The user can initially select the luminance level (how bright the content was mastered, also known as grading) for the content they want to view, but even after this selection is made, it can be changed on the fly by pushing the up arrow on your player's remote and selecting a different output value for that specific test or demo content. S&M worked with Dolby and other industry heavyweights on the disc's patterns and demonstration montage, both of which provide a range of options to evaluate HDR tone mapping on different displays. (Tips are posted on the website that will help to get the most from the disc's content.) Unlike S&M's previous test disc, the HD Benchmark, this version does not include general explanations on how to use the patterns wrapped into its interface but is still easy to navigate and use. It has basic video setup and evaluation patterns aimed at the general consumer, but also patterns and features designed for use by professional calibrators, reviewers, and even manufacturers. The Spears & Munsil (S&M) UHD HDR Benchmark is a video test disc developed with a wide range of users in mind.
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