Linear workflow changed in Octane 3?

[anitime]

Hi,

I have upgraded Octane in the middle of a project (yes, I know...), and now when I try to render out in linear workflow (multilayer EXR Untonemapped) my images wash out. I hav e set everything I could find to Linear (File format in the Render Passes Node, Exposure=1.0 & Gamma=1.0 & Response=Linear & Checked Neutral Response in Imager.Camera Node).
The IPR shows what it should be, but as soon as I render out, the renders look too light, and I need to apply an inverted LDR gamma (0.48) to the image to get the right look.

If I apply a gamma of 2.2 in the Imager.Camera node, the IPR shows the same shading as the final render, which is too light. If I apply a Custom Gamma of 2.2 to the IPR in the Imager.Camera node, the IPR shows the same washed out colors as the final render.

In the former version, I got the same colors as the IPR when setting everything as mentioned above.

(I have of course googled all over the place, before asking here. I might have missed something though, then please point me in the right direction...)

TIA,

Daniel

[juanjgon]

The are no changes in the linear workflow in Octane 3, as far I know. What are your LightWave color space settings? Are all of them set to linear also?

If you want to share a scene with this issue, I could test it here.

Thanks,
-Juanjo

[ryanroye]

I highly recommend linear color space settings. Otherwise, Octane renders will not accurately reflect the actual lighting of your scene, which could lead to excessive noise being visible when it would normally not be.

If you don't already know, the settings are found in the upper-left "Edit" pulldown menu.

[anitime]

Thanks for the quick replies, I always work in linear colourspace when working with a compositor. If not, they will yell at me! (Which one did, today, in a friendly way.)

My LW-settings are all linear as well.

The settings that work for me now are:

Keeping EVERYTHING set to linear & neutral etc. (Lightwave and the Octane plugin), ONLY giving the IPR window a custom gamma of 2.2 with a linear IPR response.
This way the IPR shows the colors that end up in the comp (After Effects & Nuke).

During F10 rendering though, the render window has the wrong gamma (too dark), which doesn't affect the final rendered frame file.

[happymilk]

is there a prediction for resolve the gamma correction for the rgb color node?
I still have to use a color correction node (gamma 2.2) each time that i use a rgb node.

thanks
Mirko