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Re: [csswg-drafts] [css-color] predefined HDR profile with BT.2100 and the PQ transfer curve

From: Chris Lilley via GitHub <sysbot+gh@w3.org>
Date: Sat, 05 Nov 2016 18:32:04 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-258631900-1478370722-sysbot+gh@w3.org>
D65 whitepoint and primaries on spectral locus, so a D50 adapted 
primary set has negative Z values in XYZ (which is forbidden by ICC v2
 and v4) and over-range a and b values in Lab (resulting in clipping 
to -128 - 127 a and b range and hue shifts).

ICCMax solves this, infinite PCS range. Can do spectral, or 
colorimetric, or colorspace encoding profile.

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Received on Saturday, 5 November 2016 18:32:10 UTC

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