- From: Jacob Rus via GitHub <sysbot+gh@w3.org>
- Date: Sun, 09 Feb 2020 05:55:39 +0000
- To: public-css-archive@w3.org
> physically impossible, the screen can't display that luminance level on the whole screen I’m not really clear which display you are talking about. This seems like an entirely display-/context-dependent question. My main familiarity is with using image processing to display high-dynamic-range scenes on a standard display, and editing photographs such that a display of above-average brightness (e.g. mobile displays of the past decade; but still using an otherwise standard output pipeline) shows "media white" for the scene dimmer than usual, to give myself more headroom for higher brightness/colorfulness in particular areas of the image. (For intended display in well lit environments.) I guess there are now starting to be non-TV displays with explicit “HDR” support? If so, those probably have listed an intended max brightness for “media white”. I would expect those specs to vary widely and to be changing quickly from year to year. My impression is that ideally the display white in a well lit setting (like a well lit office or outside in the shade) should be set to roughly comparable to a white paper in the same lighting. The film people probably have some guidance for what to do in a very dark theater type setting. You can probably get a decent default guess guess with something in the 200–500 nits range. But I’d expect for practical use you’d want to always composite SDR with HDR with the expectation that the SDR content uses the media white for the specific display settings at viewing time. Can that just be declared in the specification? -- GitHub Notification of comment by jrus Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/3435#issuecomment-583807974 using your GitHub account
Received on Sunday, 9 February 2020 05:55:42 UTC