"One of the scopes that can be shown is a CIE chart. That gives a sense of the chromaticity range but really doesn’t tell the whole story as it doesn’t take into account the luminance of the signal.
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Dr Masaoka explained that you can use the idea of gamut rings in the same way but with the advantage that it would include an element of luminance. He is developing plug-ins, the first for Resolve, to allow live gamut ring display and told me that he believes that in the future, colorists and graders would like to use the system as it presents so much information in a simple form."