[csswg-drafts] [css-color-hdr] Where is the rec2100-pq/linear black luminance coming from? (#10459)

swick has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-color-hdr] Where is the rec2100-pq/linear black luminance coming from? ==
The title almost says it all. The spec defines the black level as 0.001 nit.

https://drafts.csswg.org/css-color-hdr/#valdef-color-rec2100-pq

```
White luminance  203 cd/m²
Peak white luminance  10,000 cd/m²
Black luminance  0.001 cd/m² 
```

ST 2084 defines the black luminance at 0 nit, but it also is not defining a viewing environment so that isn't completely weird to me.

Wikipedia says black luminance is at 0.0001 nit for some reason.

Rec. 2100 says

```
Minimum luminance of display (black level) ≤ 0.005 cd/m2
```

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/10459 using your GitHub account


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Received on Monday, 17 June 2024 21:45:50 UTC