"HDR mastering is for * nits" option not present in 17.4.2

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musicelect

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"HDR mastering is for * nits" option not present in 17.4.2

PostSun Dec 05, 2021 12:08 am

The option for "HDR mastering is for * nits" in Project Settings -> Color Management is no longer present for DaVinci YRGB color science (non color managed). It is available for DaVinci YRGB Color Managed, but I don't use a color managed workflow.

I wonder if this removal was intentional or not. It was present on every version up to 17.4.2 and the manual still shows it (page 208, although I think this is in reference to the color managed mode). My normal HDR workflow is to use Rec.2100 ST2084 and the option to specify max nits was always present. I know that Resolve has been offering preset Timeline color spaces of Rec.2020 ST 2084 with declared nit options of 1000, 2000, and 4000. However, it's not clear how those settings affect grading so I choose to not use them.

It would be nice to just have the "HDR mastering is for" option back.

Screen Shot 2021-12-04 at 4.02.49 PM.png
The "HDR mastering is for" option is missing.
Screen Shot 2021-12-04 at 4.02.49 PM.png (142.97 KiB) Viewed 515 times
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Screen Shot 2021-12-04 at 4.02.59 PM.png
The "HDR mastering is for" is present for color managed workflows.
Screen Shot 2021-12-04 at 4.02.59 PM.png (151.92 KiB) Viewed 515 times
Last edited by musicelect on Sun Dec 05, 2021 3:24 pm, edited 3 times in total.
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waltervolpatto

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Re: "HDR mastering is for * nits" option not present in 17.4

PostSun Dec 05, 2021 3:07 am

I never found out what those setting where meant for. I wonder if they where just redundant.
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Peter Chamberlain

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Re: "HDR mastering is for * nits" option not present in 17.4

PostSun Dec 05, 2021 8:44 am

Your selection is non color managed.
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musicelect

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Re: "HDR mastering is for * nits" option not present in 17.4

PostSun Dec 05, 2021 12:29 pm

Peter Chamberlain wrote:Your selection is non color managed.

That's correct. I'm not using the color managed mode. As you can see in this screenshot of Resolve 17.2.1, previous versions offered the "HDR mastering is for" option in non-color managed mode.

If this option is meant to be removed in favor of the "Rec.2020 ST2084 **** nits" options, then I suggest re-naming the "Rec.2100 ST2084" option to "Rec.2100 ST2084 10,000 nits".

Screen Shot 2021-12-05 at 4.25.10 AM.png
Previous versions of Resolve offered the nits option for Rec.2100 ST2084.
Screen Shot 2021-12-05 at 4.25.10 AM.png (158.08 KiB) Viewed 165 times
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Andrew Kolakowski

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Re: "HDR mastering is for * nits" option not present in 17.4

PostSun Dec 05, 2021 1:07 pm

waltervolpatto wrote:I never found out what those setting where meant for. I wonder if they where just redundant.


Yet another Resolve mysterious setting :)
If I remember well it gets written to HDR metadata for MOV.
What else does it do I have no idea.
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musicelect

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Re: "HDR mastering is for * nits" option not present in 17.4

PostSun Dec 05, 2021 3:23 pm

Andrew Kolakowski wrote:If I remember well it gets written to HDR metadata for MOV.
What else does it do I have no idea.


I think that's all it does. I'm not seeing any other effect on grading. It's an acceptable substitute for not having the max nits setting anymore. I may eventually move to the color managed mode, but I need to do some testing to make sure it works for me.

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