Chaos Corona Forum
General Category => Gallery => Work in Progress/Tests => Topic started by: Torsten Angerer on 2023-11-15, 11:46:20
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Hi, all!
A couple of weeks ago I had the opportunity to play another round with Cinema 4D, this time with the Corona Render.
I left everything at the default setting, played only with the timeframe, running from 5 Minutes to 9 minutes per frame for the various animations.
And of course I ran into some Problems, especially with noise, „Firefies“ and DoF, but I wasn´t even scratching the surface of the possibilities of this renderer.
I like the idea of using the CPU for rendering, even in the near future.
What would be the „optimal settings“ in Corona with better results on one hand, but without endless rendertime?
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Hi there, the ''best'' settings are those of the default settings. What issues did you have with DOF? Please feel free to create a support ticket so we can assist you further. A link to do that is in my signature below.
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Hi all,
I have just uploaded a short and fast Animation on YT, all rendered with Corona.
Maybe you are able to see the noise were the grey spheres are, and the flickering of the green pillow, other than that, I am pretty satisfied wth this first set of render.
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Today, I like to present some more Pictures and another short clip made in Cinema 4D and Corona renderer.
In the video I only used Corona Sky and Sun with no additional lightning. It looks like some textures, especially the fabric ones need more attention, otherwise you will get flickering in the Video, or fireflies in the Stills.
Anyway, it was fun again!
Maybe it`s time now to take a closer look at pyro, but I`m not really a fan of Explosions and fire.
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Long Holiday Weekend a perfect opportunity to upload some new pictures, CR with default sttings, 50 to 100 passes or so.
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First time I did something different with the Pyro Modul in Cinema 4D other than setting an animated sphere on fire.
At this point i´m not able to color the smoke in Corona. If I cache the color in the Pyro output in advance, it turns out to look like an impenetrable dark mass.
So, i still have a lot of problems to solve.
As an alternative I put the Output into a volume mesher, to get the whole material library to use. in this case I choosed the Fog Material turned puple. It also
reduced the visible grid on the Smoke simulation, but the voxelsize is already at 1.
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Hi, changing smoke color should be pretty straightforward.
You can adjust the absorption color and scale.
Then you can adjust the scattering color. Disabling "single bounce only" can be a good idea to get more realistic results, but it will also render slower.
Here are some screenshots. In the last one I tried setting up some kind of dense, yellowish smoke so I've set both absorption and scattering to a yellowish hue.
Note that if you leave scattering color-less (white/gray) and only set absorption to some strong color, you will get weird results, but it's supposed to work that way. With absorption, you are treating light rays with maths, so the original RGB values may at some point end up as something completely different. :)
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If you want to dive in deeper, please check out our support documents :)
https://docs.chaos.com/display/CRC4D/Corona+Volume+Grid
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Hi Maru,
thank you very much for the detailed Feedback! Looks like Absorption is the keyword indeed.
I must admit that I ignored this specific tab completely.
Will try all the different settings next time
Beanzvision, thanks for the advice too!
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Hi,
kind of busy right now, but occationally searching for some new interesting stuff.
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Hi,
looking for some nice stuff,i ran into the question how to create a spongy looking texture, with the remains of once air filled bubbles of different sizes.
What would be the best way to create a foamy material in Corona?
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What would be the best way to create a foamy material in Corona?
Hi, you can read older discussions about foam/sponge material in the forum and see if you'll find something that you can adopt in your scene.
https://forum.corona-renderer.com/index.php?topic=5154.0
https://forum.corona-renderer.com/index.php?topic=10575.0
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Hi,
I couldn´t find something useful, due to my limited knowledge, just scratching the surface of Corona!
In the meantime I tried to find a more foamy texture, but I ended up with something looking like a virus, maybe useful for some medical illustration.
Correction: I didn´t saw your links, so I will give it a try, Thanks!
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Some further "testing!"
Pic 2 should look like pic3(physical renderer) but CR did not render the destruction of the main structure.
I think i forgot to cache the simulation first.
In all cases I missed to turn on the thickness for the car.
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Hi,
yesterday i was surprised by an old very well known enemy, fireflies, as you can see in picture number 1
To reduce thisi unacceptable amount of unwanted reflections or whatever, i tried to gain some nformation, including from this side.
Pic. no2 shows an environment allmost free of blistering highlights, but with loss of quality in the render, und loss of transpirancy in the glass material., because i reduced the glosiness from 100 to 85 percent.I also increased the GI/AA balance to 22, und put om caustics, which is pretty slow to render, but gives some nice "Lichtgekringel".
Finally picture Number 3 is a comprmise of settings, unfortunately with new dangerzones and the reappearance of my unwelcome "firénds."
But still cool what you can do, just out of the box!
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To reduce those fireflies in the background/out of focus:
1. Use the improved DOF highlights solver - https://support.chaos.com/hc/en-us/articles/4528608272785-How-to-enable-and-control-Depth-of-Field-DOF-in-Corona-for-3ds-Max#h_01H3208VDBVX29VA2HACX56B2V
2. Set highlight clamping to as low value as you can without making the image look bad (but higher than 0) - https://support.chaos.com/hc/en-us/articles/4528471000849-What-is-highlight-clamping-3ds-Max
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Hi,
thanks once again for your support!
I already followed your advice, the first pic shows the highlight solver enabled, and clamping set to 1, 56 passes.
For the second render I increased the budget value(whatever that is?) to 8 in the solver,and reduced the clamping to 0.5, with 27 passes.
The second pic looks darker, with less details, but both are free of fireflies and much annoying highlights, at least in my opinion.
Good to know, so thanks again fpr your help!
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Always glad to help!
The DOF highlight solver improves the quality of bright "bokeh" spots.
Highlight clamping will always make images darker because it, well, clamps highlights. :)
One note: when using highlight clamping above 0, the output is not "high dynamic range" any more. So if you are planning to do some compositing or need a wide tonal range for other reasons, don't use it.
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Hi,
in some further exploration of Corona I used a quick setup with only a couple a lights, no sky, no sun.
Instead of limiting time or the amount of passes, I used the noise level.
In pic one it was set to 4 wirh like 40 passes in 7 Minutes rendertime. the second one saw a reduced level set to 3 ,
with some 75 render passes and rendertime doubled.. After a first quick look, i could not see a noticable difference.
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HI,
I had the opportunity to play around with a newer version of C4D wirh the particle system, but at least for now i didn´t found the excitement as expected.
Maybe Particles stuff comes a couple of years too late for me, i`m prefering soft body/cloth stuff nowadays
Even though I have not the slightest idea how a piece of software like Corona works, I would like to see a Corona Tag for particles, similar to the spline tag(no circle, no sweep) because simulation of a lot a particles inside a cloner with gazillions of tiný spheres means an awful slow simulation.
If there is an imaginary wishlist, I would like to see a foam render tag(I already brought this up a while ago, and some more fancy materials inside of Corona like Styrofoam in a future version of Corona.
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Hi,
a new round of try and error, this time a little bit from the dark side.
I also tried some volumetric lightning, but ended up as usual with heavy banding,
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If there is an imaginary wishlist, I would like to see a foam render tag(I already brought this up a while ago, and some more fancy materials inside of Corona like Styrofoam in a future version of Corona.
You can always go to Corona ideas portal and submit your requests there: https://chaoscorona.ideas.aha.io/ and also vote for already submitted ideas that you like to be implemented first.
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Hi,
a couple more pictures with some particles and the "magnificent" Spline Tag, which
makes the live a lot more easier, at least inside of Cinema 4D.
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Hi,
I found some inspiration on this site(Chair file) and on the Net, to work on an "advanced" Lightning- Set Up,
with mulltiple lights, partly very large, very close, and with low or high intensity.
It is easy to lose control over each lightning source, but in the end, it looked kind of cool!
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Hi,
today I like to upload two more pictures with sky only lightning, which i prefer,
because it is much easier to handle than any other setting.
There is no color correction,
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Hi,
I found some time, and had the patience to upload a new animation on YT.
All rendered in Corona with Sunlight only, sometimes with the support of a tiny auxiliary light in the background.
I uploaded some more pics on my starving Behance account, but somehow my content is hard to find.
https://www.behance.net/gallery/216174403/Staphielo
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That was a rather fun watch, ty for sharing!
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Hi,
searching for some new interesting stuff, I like to take a closer look into "worn edges", curved decals and maybe light gobos!
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Hi,
not that much in the works, just one still, bit exclusively taken from the evergrowing collection:
"How to surprise your favorite car salesman after a short test drive on a sunny sunday afternoon.
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Hi,
just uploading another picture. I falied again using Pyro, and/or the Particle system to create a believable kind of Wirbelschleppe(wake vortex)
coming out or sneaking around the propeller.
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Hi,
some more pics after a short session with Cinema 4D in order to find
something interesting.