Particles render with incorrect gamma

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boxfx
Licensed Customer
Posts: 275
Joined: Fri Apr 27, 2012 9:13 am

When I render c4d particles, they always render washed out, as if their colours have the wrong gamma applied. In the attached screenshot you can see my particle stream and a cube next to it with an identical gradient to show this isnt a project/file problem with wrong settings.

On the left is the live view which looks good. In the middle is the live viewport which looks good. But then on the right is the final rendering which always outputs washed out particles, even when other items in the scene have the correct colours.
particlegamma.png
c4d file attached

c4d 2025.1.3
octane 2024.1.2 r2
gf 4090
driver 572.60 studio
win 11
Attachments
part origonal broken.zip
(150.54 KiB) Downloaded 19 times
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boxfx
Licensed Customer
Posts: 275
Joined: Fri Apr 27, 2012 9:13 am

... and if I cache them, they work, except sometimes they dont and they decide to render pale or show up at the wrong size, but if I save and reload the file, then the colour works, but now everything renders with the wrong size.

video attached using the previous scene file
particles 3.mp4
(24.15 MiB) Downloaded 491 times
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bepeg4d
Octane Guru
Posts: 10321
Joined: Wed Jun 02, 2010 6:02 am
Location: Italy
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Contact bepeg4d

Hi,
weird, this seems only happening in Maxon C4D 2025, in C4D 2024 the result is correct in Picture Viewer:
IMG_4425.jpeg
In C4D 2025, while the devs will look into this, please try to use a "Color space conversion" node after the Color Shader, and set it to "perceptual RGB to RGB":
IMG_4426.jpeg
The result in Live View will be wrong, but it should be ok in Picture Viewer.

ciao,
Beppe
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