Re: [csswg-drafts] [css-color-hdr-1] Query 9: Black Level (#5322)

@simontWork I agree that for HLG in CSS, the screen peak brightness and the ambient illumination level are not needed for correct display; and the user can freely adjust the peak brightness to suit the ambient illumination.

As I am sure you know, this is not the case for PQ; a re-rendering step is needed for viewing in non-reference conditions.

For black level though, and in particular when combining SDR and HLG HDR content, it seems that the black level of sRGB (or indeed of 709) should not be zero because the very deepest blacks in HDR are blacker than sRGB black in the reference viewing conditions. 

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Received on Sunday, 19 July 2020 03:21:55 UTC