Re: [csswg-drafts] Define rec2020 color space to use 2.4 gamma (#12574)

I'd like to reopen this because a color expert colleague shared the following:

> IMHO, this is a very weird twist on BT.1886 specification, which says that for converting scene referred data tagged with ITU Rec.2020 (which besides primaries contains OETF as a transfer function) to display referred data we should use gamma 2.4 (which is a calculated EOTF from the mentioned OETF). On Apple platforms we do it when converting the data and we don’t need a separate color space like Rec.2020 with EOTF. Seems to me that the proposed color space is a hack to help those who don’t know a difference between OETF and EOTF.

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Received on Wednesday, 10 September 2025 05:10:04 UTC