Chaos Corona for Cinema 4D > [C4D] General Discussion
Lightmix noise
Vizoom:
Hello,
I don´t understand the lightmix:
-One image renders nice and after the render you´ve the possibility to save the image with interior lights switched on and another version with lights off inside the building for example
-Another image with lightmix just doesn´t lose the noise, and after hours of render we see the disaster and have to restart the render without lightmix and go the standard way = adjust the lights before and no adjustments afterwards!
It´s nice to use lightmix for previews, so we can change the sun-HDRIs and switch interior lights on/off for tests in the scene or previews...
But a time ago already I noticed that it´s not a good idea to have two or more hdris as different >light-selects< of lightmix in the final render as the image often just didn´t lose the noise...
So we now only have a sun light-HDRi and different groups of interior lights as light-selects, to adjust the lighting inside aftterwards...
But even this method is a risk: in the last projects finished two days ago I noticed after 3 hours of render that there just won´t be less noise. We stopped and switched the lightmix off, indeed it was the solution!... Next day I started this lightmix render again as a test and after 15 hours it was still noisy (particularly areas inside the building and glass objects) although the same scene (same lights but without lightmix!) was noisefree after 3-4 hours...
There is something wrong with lightmix.... to avoid surprices we will probabl only use it for testing/previews but avoid it in final renders now ...Really disappointing such usability problems :(...
Best, Artur / vizoom
James Vella:
Are you setting a noise limit instead of a time/pass limit?
Vizoom:
--- Quote from: James Vella on 2023-10-05, 20:19:11 ---Are you setting a noise limit instead of a time/pass limit?
--- End quote ---
We had no time / pass / noise limits in the described case!
bnji:
Hi there,
It would be better to provide screenshots, scene files, etc., to understand the issue better, as right now, we cannot be sure about the whole scene setup.
If you prefer, you can send us your scene project (including all assets) by submitting a support ticket instead.
We'll need as much information as possible to provide a more accurate POV/solution.
Looking forward to hearing from you.
Kind regards.
Vizoom:
--- Quote from: bnji on 2023-10-05, 20:43:51 ---Hi there,
It would be better to provide screenshots, scene files, etc., to understand the issue better, as right now, we cannot be sure about the whole scene setup.
If you prefer, you can send us your scene project (including all assets) by submitting a support ticket instead.
We'll need as much information as possible to provide a more accurate POV/solution.
Looking forward to hearing from you.
Kind regards.
--- End quote ---
It is a competition entry, so I could send (or show) some files only when the results will be published...But we had the same problem in an older project (standard file needed some hours, lightmix version (with the same lights!!!) never(!) denoised)...I will have to look for this file!
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