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Octane 2022.1 renders 2021.1.6 scene much darker
Posted: Fri Jan 27, 2023 11:26 am
by LLLOtoy
i guess it is due to color management that a scene built with Octane 2021 renders much darker in Octane 2022...
what did change? and how to get back to former brightness and colors?
best
Jan
Re: Octane 2022.1 renders 2021.1.6 scene much darker
Posted: Fri Jan 27, 2023 12:51 pm
by juanjgon
I'm not sure, to be honest. Are you sure that you have the same OCIO config in both versions?
-Juanjo
Re: Octane 2022.1 renders 2021.1.6 scene much darker
Posted: Fri Jan 27, 2023 1:55 pm
by LLLOtoy
yes the settings didn`t change... and settings are in the screenshot.
also i attached an example render where the difference is visible...
right: Mplay image with enable OpenColorIO deactivated, with rendering of Octane2021
left: IPR Octane 2022 - darker than right
right: Mplay image with enable OpenColorIO deactivated, with rendering of Octane2021
left: IPR Octane 2021 - which is matching obviously.
thanks, best
jan
Re: Octane 2022.1 renders 2021.1.6 scene much darker
Posted: Fri Jan 27, 2023 6:33 pm
by juanjgon
Sorry, I'm not an expert in color correction at all, but I think that to export sRGB png files you should select the OCIO sRGB config in the render target node to let the IPR preview math the output file.
-Juanjo
Re: Octane 2022.1 renders 2021.1.6 scene much darker
Posted: Thu Apr 20, 2023 9:52 am
by LLLOtoy
a late followup,
i found the reason for my scene beeing darker in Octane 2022 as i found out that my problem is not colour-space or alikes but the keepInstancePower checkbox that was added to OctaneLights in 2022, and is on by default.
So opening a file built with a previous version, and using scaled Grid-Lights (surface brightness unchecked) leads to a quite different scene lighting... but is easily fixable by unticking this checkbox on all scaled lights unsed in the scene...
best
jan