On Sat, 2021-06-12 at 11:59 +1000, Stephen Morris wrote: > It's High Dynamic Range, its a methodology for improving the colour > range, brightness range and detail. I think it is the video > equivalent of HDR for photography.
With photography, it's generally the combination of two photos one where the exposure is made to favour dark end of the scale, the other where the exposure is made to favour the bright end of the scale, and they're combined together, giving you an image that doesn't have blown out highlights and crushed blacks. With video it could simply be that there's more individual steps between black and full white (mimicing the above photography technique), but often it's engineered to simply add brighter and brighter steps above the original video range. Which seems to be how my bluray player and TV make use of it. You see that on TV sets where they can be used in full daylight, and you can almost feel the picture across the room. By the time you've turned the contrast down to acceptable levels to watch a movie or tv show, there isn't much advantage in the scheme, the way of lot of things are filmed. And they really do need to be produced with HDR in mind, if they're to take proper advantage of it (i.e. every shot is not exposed for full contrast, only really bright objects should hit peak intensity). A lot of the more recent British TV programs are often filmed that way, the ones trying for a cinematic look. Any scene that's not supposed to be a bright summer's day is often only half contrast. With computing, not only would you need to tell the graphic system to work in that mode, you'd also need programs with the ability (e.g. your media player, and other programs that display things). -- uname -rsvp Linux 3.10.0-1160.25.1.el7.x86_64 #1 SMP Wed Apr 28 21:49:45 UTC 2021 x86_64 Boilerplate: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the mailing list. _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
