Messages

1

[C4D] I need help! / Re: Color Profile Issues with Cinema 4D R25 and Corona 12

« on: 2024-12-02, 18:46:14 »

Hi everyone,

Sorry for the delay in responding, but I’ve been doing quite a bit of testing.

I’m really struggling to achieve the results I’m aiming for and noticing a lot of discrepancies between how lights work in real life and how they behave in Corona. I’m sure this is partly due to my own lack of experience with 3D. I’ve worked on film sets for 15 years, so I know how to light a scene to get the results I want, but in Corona, I feel like a total beginner. I hope someone here can give me a hand—haha!

As for the pink/purple tint issue, I think I’ve managed to minimize it. However, I had to completely remove the background and rely on the VFB’s post-process settings. For now, the issue seems resolved, but I’m not confident I used the right approach—it might just be hidden for now and reappear when I change the lights or the set.

Another problem I’m facing now is the excessive reflection in the scene, which you can also see in the screenshot. This box (textured in Substance Painter, mainly because it’s easier for me to work with the PSD files from the graphic designer, which contain many masks and layers) is supposed to be made of paper, but paper doesn’t reflect light like this.

On top of that, I’m having trouble understanding how the “directionality” parameter for lights works. I’d like to create one light with sharper shadows and another with softer ones, but this parameter is confusing me. I can’t figure out which real-life property it’s supposed to emulate.

To summarize:

I think I’ve resolved the pink/purple issue for now.
I’m struggling with excessive reflections that alter the look of the scene.
The "directionality" parameter behaves in ways I don’t fully understand.


I’ve also attached my project file. Please don’t share the box design anywhere else, as it’s under a contract I signed,
Also, I can’t figure out how to share the project with the textures because every time I move it to another computer, it can’t find the textures. As I mentioned, I don’t have much experience with Cinema 4D, so I’m also attaching a zip file that includes them. (here's the texture, i don't have any other solution if not a wetransfer because they are too heavy https://we.tl/t-m5WO7Nrgfc )

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[C4D] I need help! / Re: Color Profile Issues with Cinema 4D R25 and Corona 12

« on: 2024-11-29, 16:12:44 »

Hi
1 i am using substance painter because i am more familiar with masking in photoshop and in substance

2 i will upload the project as soon as possibile but i cannot upload the box and the texture because of NDA
so i will create a new object with the same workflow as soon as possible

3

[C4D] I need help! / Re: Color Profile Issues with Cinema 4D R25 and Corona 12

« on: 2024-11-29, 13:33:57 »

Thank you so much for your suggestion! I tried disabling the ACES OT operator in the tone mapping stack, but unfortunately, it didn’t solve the issue.

To clarify my workflow: I created the textures in Substance Painter and exported them using the Corona preset available there. I’m using a Corona Physical Material in Cinema 4D, where I’ve plugged in the textures. Could it be that something in the Substance-to-Corona pipeline is causing this artifact? That's what I was asking myself for the last week BUT

I’ve conducted several tests and managed to find an export method from Substance Painter that keeps the material looking fairly accurate.
However,  I noticed something strange during my tests: while the material exported from Substance Painter remains blue now, any other physical material I create using the Corona Node Material turns violet when illuminated.

I also experimented with adjusting the Kelvin temperature of both the lights and the VFB in Corona. By setting everything to 5500K, I can get the blue tones back to normal, but this completely throws off the balance of the other colors. This workaround doesn’t feel practical for broader projects, as it limits control over the lighting and overall color management.


I’m really stuck at this point and not sure what else to try. Do you think there’s a deeper issue here, or is there something I might be missing in my workflow? I have attached a screenshot but feel free to ask me to provide more information

Thanks again for your help and for taking the time to look into this!

4

[C4D] I need help! / Color Profile Issues with Cinema 4D R25 and Corona 12

« on: 2024-11-25, 10:57:57 »

Hi everyone,

I’m having some trouble with textures in Cinema 4D R25 using Corona 12, and I was hoping someone here might have a solution.

I’ve exported my textures from Substance Painter using the Corona preset, but when I bring them into Cinema 4D, the colors look off. For example, I have a box that’s supposed to be blue, but as soon as I light the scene, I get these weird purple aberrations that aren’t in the original texture.

I’ve been trying to figure out what’s causing this, and after some research, I think it might be related to the color profile. The problem is, I can’t find any clear tutorial or workflow to fix it. I know OCIO isn’t supported in this version of Cinema 4D, so that’s not an option for me.

I also tried enabling the "Use Cinema 4D Color Space" checkbox in Corona’s preferences, but it didn’t seem to make any difference.

Has anyone dealt with something similar? Is there a solution or maybe a workaround I can try?

Thanks a lot for any help!

EDIT: i have made a test with the new version of cinema 4d  with OCIO color space and the problem is still the same.. cannot figure it out