Colorspace and primaries

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Sharlybg
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Re: Colorspace and primaries

Post by Sharlybg » Wed Feb 26, 2020 9:10 pm

Egert_Kanep wrote:
Wed Feb 26, 2020 8:20 pm
Better yet to have full support for ocio colormanagment.
Thanks a lot for the link. Just look like we are losing sole pretty nice data using rec 709 vs Acescg.

This is a good topic. The nice thing about it is just that it close the gap to spectral rendering.
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Sharlybg
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Re: Colorspace and primaries

Post by Sharlybg » Thu Feb 27, 2020 9:51 am

But as Dade said also this is not a Luxcore problem. The engine output what you throw in. So Blender/blendluxcore is where the change need to be done. BTW here you can find that for 2.8 OCIO seem to be considered and use at some point :

https://www.toodee.de/?page_id=1720

interesting explanation here :

https://www.toodee.de/?page_id=1221
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polyrhythm
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Re: Colorspace and primaries

Post by polyrhythm » Wed Mar 11, 2020 6:29 am

There's some misconceptions here I'd like to clear up.

By default, Blender puts you in the Filmic "Blender" color space - one made specifically for Blender. It is "wide-gamut" and supports plenty of dynamic range in the scene-referred values. If your only concern is that you're somehow trapped in sRGB space for rendering, well...you're not, unless you've intentionally moved your scene-referred color space to sRGB, which is not default.

Be aware that the Blender compositor has many nodes which do not work in scene-referred color space - the only truly safe one I know of is the Color Balance (ASC-CDL) node. For this reason, I choose to use industry-standard VFX applications for my color grading.

With that out of the way, it is possible to use ACES inside of Blender if you follow the links in the post previous to mine. Be advised that if you do this, some random features will not work in Blender, such as the "False Color" LUT, since that is specific to Filmic. The upside of ACES is that it is fully-supported in most professional-grade applications and thus a good choice for integrating into a larger pipeline.

If your only concern is simple color grading and generally keeping things inside Blender, stick with Filmic and the ASC-CDL node inside of the compositor.

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