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Rendering with Arnold in CINEMA 4D using the C4DtoA plug-in.
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Team render color problem

14 REPLIES 14
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Message 1 of 15
nezgro79
579 Views, 14 Replies

Team render color problem

Good morning!
I have a problem with team render and arnold, if I run a team render in the viewer my two machines calculate and my image has good colorimetry.

if I render team render through the render queue I no longer have the same colors... I don't understand why
I'll leave you a video of the problem

https://vimeo.com/286762498

14 REPLIES 14
Message 2 of 15
nezgro79
in reply to: nezgro79

anybody help?

Message 3 of 15
maxtarpini
in reply to: nezgro79

looks like a gamma issue

Message 4 of 15
nezgro79
in reply to: nezgro79

But why in render file and not in the viewer ?

Message 5 of 15
maxtarpini
in reply to: nezgro79

because viewers generally output in gamma space while renderers do it linear.

Message 6 of 15

That's odd. I just made a quick test in a simple scene and it rendered fine. Does it happen in another scenes as well, or only in this one? Is it correct if you render directly to the Picture Viewer (no Render Queue)?

Message 7 of 15
nezgro79
in reply to: nezgro79

yes whit other scène i have the same problem but just in render queue

Message 8 of 15
nezgro79
in reply to: maxtarpini

How i can fix it?

Message 9 of 15

I'm not sure what's going on, I'm not able to reproduce it. Can you send me your scene? Maybe it's something in there. What's your C4D and C4DtoA version?

Message 10 of 15
nezgro79
in reply to: nezgro79

Message 11 of 15

OK, I could reproduce it in R19. I'm not sure yet what's going on, but a color space transform is missing somewhere in the plugin. It renders correctly in R18 or when the Render Queue is not used. I'll try to fix it in the next release. Meanwhile you can add a 2.2 gamma correction in post.

Message 12 of 15
nezgro79
in reply to: nezgro79

Ok thank you !!

Message 13 of 15
maxtarpini
in reply to: nezgro79

Btw be aware that at least you don't have other color mgmt nodes in AE .. tiff 16bits (you're using looking at your video) is not saved in linear mode and displayed in gamma corrected mode automatically .. so your workflow in AE may be completely wrong (you're compositing and color correcting stuff in gamma space which is very wrong). If the above doesn't make any sense to you .. you better have all your assets in exr 32bits and set both maya/arnold and AE to the correct color space so the apz will take care of that for you .. they will save and work out stuff in linear mode and display it correctly with gamma applied.

Message 14 of 15
nezgro79
in reply to: nezgro79

Thank you max ! but i have tried in 8 bit to and in after effect my composition is in 16bit

Message 15 of 15

This should be fixed in the new C4DtoA 2.4.1.1.

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