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<p>backwards compatible with SDR <a href="page.php?w=UHDTV">UHDTV</a>, but not with older SDR displays that do not implement the Rec. 2020 color standards. It does not use metadata and is royalty-free.</p>

<p><big> PQ10 (PQ format) </big></p>
<p><a href="page.php?w=PQ10">PQ10</a>, sometimes referred to as the PQ format, is an HDR format that can be used for video and still images. It is the same as the HDR10 format, except it lacks metadata. It uses the <a href="page.php?w=perceptual_quantizer">perceptual quantizer</a> (PQ) transfer function, Rec. 2020</p><p>
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