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Messages - Redeemer

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[C4D] Feature Requests / Layerset inside CBitmap
« on: 2023-11-02, 12:36:13 »

Would it be possible to get the layerset option when loading a PSD file inside a CoronaBitmap? I like to use just one psd for all my bitmaps / alphas etc. When loading the psd in a texture slot without a CoronaBitmap shader the option is there, but it's gone once merged inside a CoronaBitmap.

Edit - posted this in the wrong forum. Would you be so kind and move this to "Feature Requests" TNX!

[C4D] Bug Reporting / Re: Corona 10 Very Slow
« on: 2023-11-02, 11:34:05 »
Did you put all used bitmaps inside a CoronaBitmap shader?

In one of my scenes where the rendertime went up from 1h20 in C9 to 2h28 in C10 I've managed to get it down again to 1h40 by just using the CoronaBitmap shader for (most of) the bitmaps.

[C4D] Bug Reporting / Re: Corona 10 Very Slow
« on: 2023-09-28, 09:24:51 »
Is there any news about this?

I think there is an issue with the triplanar / mapping randomizer (either one or in combo) which takes a lot of computing power. I also saw similar reports in the max forum.

[C4D] Bug Reporting / Re: Corona 10 slower than Corona 9
« on: 2023-09-05, 10:12:36 »
I've been using Corona 10 for rendering for some time, but I noticed that it slowed down very much when rendering and with large scenes these times are even several hours, where after optimization to 3k resolution, the time rarely exceeded 2 hours for me. Now, those times are much longer. Today I did a test of a simple packshot scene on Corona 9 and Corona 10 and I was very surprised because it is slower and twice as many rays on Corona 10. Below I am posting a photo with statistics. Have any of you had similar experiences with Corona 10?

My setup Cinema r20, Mac OS Catalina,

I also made a post about it, please send over your scenes to the devs so they can fix this horrible update.

[C4D] Bug Reporting / Re: Corona 10 Very Slow
« on: 2023-09-05, 10:11:23 »
Personally I'd suggest setting things up so you can use a multiloader, see

You could then either
- Leave 10 as the default when you run Max, with a little icon for the script that starts Max with 9 as the exception, or
- Remove 10, install 9 as default when you run Max, then add 10 as the exception run from the script

Hope this helps!

(PS I prefer to have newest as default, older version as scripted start)

Sounds like a good idea, but does this also apply to C4D?

[C4D] Bug Reporting / Re: Corona 10 Very Slow
« on: 2023-08-28, 12:06:45 »
Hi Tom, thanks!

I've made a ticket and uploaded the scene. As I do a lot of bottles with heavy use of caustics, maybe the new caustics solver has to do something with it?

When I want to revert to Corona 9, can I simply grab that installer or do I need to remove Corona 10 from the system first?


[C4D] Bug Reporting / Corona 10 Very Slow
« on: 2023-08-24, 15:15:55 »

I found Corona 10 to be very laggy and slow on different facets of the engine. I've opened an old scene that rendered in 1h15m in C9. With C10 it is almost two hours. Quite unacceptable if you ask me. Also the IR is buggy. Hangs when making changes to lights etc, and when trying to stop the engine then it seems to stuck.

Maybe I can upload one of my scenes for the devs to look at?



Gallery / Re: Limavady Irish Whiskey
« on: 2023-03-17, 10:27:32 »
That seems very odd indeed, and tried to get that error out of the bottle so I already did some testing prior to the rendering. Everything seems normal in a simple scene lit with a HDRI, also when I place a 3ds max capsule in place of the bottle with the same material attached (and ofcourse basic corona physical water preset) I get the same result. So I ended up just accepting this.

Nevertheless, thanks for noticing!

Gallery / Limavady Irish Whiskey
« on: 2023-03-17, 09:05:43 »

Thanks for watching. Hope you enjoy these images as much I enjoyed making them!

Thanks for your answer!

Wouldn't it be better though to edit in sRGB, mostly because when converting the image to sRGB it is a lot different from the aRGB version. Despite the smaller color range in sRGB it is at least edited in a way that it is the same for me en my client.

Sorry if I may sound confusing, I am a bit confused about this :)

I'm curious about this because I have a monitor that supports calibration and has 100% aRGB coverage.

Usually my workflow is this:

corona render exports as linear 32 bit exr > Edit images in photoshop (8 bit) under the calibrated ICC profile > Convert to sRGB when communicating with client (assuming he or she doesnt have a ARGB supported monitor) In the end I keep the layered PSD as aRGB and the flattened exports as sRGB. If the client wants a layered psd I will convert that to sRGB before sending it out.

Not sure if this workflow is correct because more often than I want I end up discussing with my clients about colors. (I dont do a lot of Archviz, more FMCG where of course brandcolors are very important)


[C4D] I need help! / Re: Caustics
« on: 2021-12-08, 10:16:37 »
Thanks Maru, going to try that!

[C4D] I need help! / Caustics
« on: 2021-12-08, 09:59:17 »

In prep of a new project I'm already testing some of the features I need to render. One of them is proper caustics. I'm struggling with the quality of the caustics, it just has a lot of noise which is -fo sho- going to be disapproved by the client.
Simple scene setup: Csun + Csky + Fast Caustics on both bottle and liquid. Noise level went down to 1,44% and applied denoising (fireflies only)

Attached are the beauty and the caustics pass.

Is there any way to get it less noisy and more realistic?


[C4D] I need help! / Re: Infinite Ocean
« on: 2020-08-20, 13:21:45 »
In the end the solution was a huge plane. Another thing that might work is to put a smaller plane inside a cloner object and clone it untill the horizon.

Posted in 'I need help' but I guess it is the same bug as Sirio pointed out:

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