https://bugs.kde.org/show_bug.cgi?id=499934
LewisT <lewistansley...@gmail.com> changed:
What |Removed |Added
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CC| |lewistansley...@gmail.com
--- Comment #23 from LewisT <lewistansley...@gmail.com> ---
I would also like to add to and repoen this as an issue with the following
findings (with a bit of tangent to add context)
For my specific display that has a peak brightness of 1000 nits to achieve full
range accuracy during HDR I require a reference brightness of 100 nits hence I
have to set the current slider to 100, these are the setting I use to master
content in as an unreal engine game developer, I also have watched media and
played multiple titles with these settings and it looks fantastic with an
excellent and precise range of contrast from shadow to highlight with great
color accuracy.
This however is where the issue comes in, if I am now to switch to any SDR
applications or use my desktop itself outside of whatever HDR content I am
trying to consume or master, it is incredibly dim, so I have to now increase
the slider up, usually around ~300 to view comfortably.
Doing so destroys the range of any HDR content I may still be trying to view,
raising all of the mid range, and completely blowing out highlights (I have
found with many titles setting the Maximum brightness anywhere above 100 will
begin to degrade accuracy of mids and will always blow out highlights, by the
time I am at around a viewable brightness for SDR, HDR looks incredibly
overexposed and unusable). So I now have to put the slider back to 100 to
resume whatever HDR content I am trying to. before this change in 6.3 happened
I simply set the two different values, HDR looked perfect, and SDR was not
overtly dim and I could swap between the two happily without requiring opening
the settings menu to change anything.
what I propose is bringing back 2 settings:
SDR brightness: this will map / shift the SDR brightness range within the HDR
range whilst HDR is enabled ensuring usability for desktop and SDR applications
(e.g. as I said before I would have this set to something ~300 to use
comfortably depending on my environment)
HDR Reference brightness: this will be the reference white brightness for HDR
content (e.g. I would have this set to 100 for my light controlled environment
or 203 for a lit environment to ensure visibility minus a little accuracy, I
also have to make this change depending on what I am trying to consume, as some
content is clearly mastered outside of / based on a different standard)
This change would allow the user to respect the standards for HDR and any
content viewed in it whilst also being able to view SDR content comfortably
without having to constantly open the settings to change sliders.
TLDR; in my light controlled environment SDR will be far too dim in a situation
to achieve accurate HDR without blowing out highlights and de-gradating mid
range accuracy because of the raised midpoint from this setting currently, so
being able to allow the user to change the SDR mapped brightness range
irrespective of the HDR reference brightness would be paramount to good user
experience.
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