Hi guys,
I’ve been trying everything but can’t get rid of this noise when animating it.
It happens even if you leave the object static in the scene.
Any advice on that? I’m pretty sure I’m missing some settings here in order to get it smooth and clean.
Appreciate any help
Hi there,
Can you try changing the GI solver to UHD cache in the general settings and then choose ‘‘Animation flicker-free’’ in the secondary GI cache? I would also change the denoiser to ‘‘Corona high quality’’ and the output format as .jpg or .png rather than a video format. I hope that helps!
Hey,
I’ve already done that, and to be honest, had no difference at all. Have you tested it and it worked for you? That’s not a compression file type issue, I guess. You can play the frames in AE and you will end up with the same noise issue.
That’s a pretty simple texture and I hope it is not a software limitation.
Thanks
Appears to be adaptivity issue. Disable it. (Yes, it’s an old bug.)
Still can see that fine noise sparkling over, that’s very weird.
Here you go. Modified scene. Strive to KISS 
Tell me how it goes.
Test_Ada.c4d (337 KB)
I’ll test it out. What exactly did you change in the render settings, GI solver set to 4k?
Found this information from Maru in other post which makes sense:
4K Cache is similar to the UHD Cache in the way it works and how it should be used, however it has slightly different properties. Most of all, it should never flicker, even when calculating it from scratch for each frame. The pattern of the 4K Cache should also be more consistent when rendered on different computers. It should be a better choice for animations (be it calculating from scratch for each frame or appending to the existing calculation). It should also calculate faster.
What kind of bug are you referring to? Has it already been reported to Chaos?
I suspect it to be same as in case of “noise visible in volume coming from mesh-lights close to source” (it’s reported).
So with that in mind I modified most of it. When you’ll analyze the scene you’ll also notice other changes: reduced polys of mesh lights to single quad (note that every triangle is a source of light); sphere isn’t Standard, Perfect, nor subdivided anymore, but just icosahedron @100 (less polys, no poles, less pre-comp., still looks perfect); “Wax Fixed” has Layer removed (it’s risky to use it w Corona); Frame Buffer Type is set “None” (faster, better for post-pro & OIDN; Highlight Clamping set to “1” (removes excessive bright spots/fireflies, also lowers noise;), Adaptive Light Solver “Off” (precaution measure), Adaptivity (Disabled), Enviro Sampler “Faster”…
I just tried again w/ Adaptive stuff back on and it renders fine. Highlight clamping set back to "0"also shows only minor change… So play around with settings (in bold) and see what change will bring noise back. Learn some and keep us posted.
And in future endeavors just remember of KISS principle (Keep It Simple Stupid).
Enjoy
Really appreciate your help. I’ll play around with the settings, but what a pain in the neck. What should be simple turns into a nightmare.
I hope developers put some effort into that to make the user’s life simpler. Honestly, I always had the idea Corona could solve most of the problems, but I’ve already had quite a few issues which is compromising.