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Messages - TomG

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Reflection overrides causing fireflies is a known issue, most likely it will be resolved by a fix recently introduced in Corona 8 (this is in the latest Max daily for testing,, so will make its way to C4D once we know how well it works).

Gallery / Re: The Forth Rail Bridge
« on: Yesterday at 16:30:56 »
Been across this many times, one of my favorite bridges in the world can confirm these images are fantastic :)

Trivia: It was also the inspiration and features heavily, albeit in a strange fantasy form, in Iain Banks' awesome novel "The Bridge"

News / Corona Renderer 7 for Cinema 4D (Hotfix 2) released
« on: Yesterday at 15:32:50 »
Corona Renderer 7 for Cinema 4D (Hotfix 2) released

This release provides compatibility with Cinema 4D R25, and the following bug fixes:
  • Corona node editor now supports drag&drop from new Cinema 4D Asset Browser
  • Fixed Team Render crashing in older versions of Cinema 4D
  • Fixed problem with Corona node editor showing incorrect preview in documents using linear input color profile
  • Fixed IR crash in scenes with cloner containing multiple subobjects in multi-instance mode

Download now from

If I remember right, known limitation - Corona Bitmap does not support animation formats. Solution is, as mentioned, use a Max Bitmap for those.

And is impossible via IOR in the real world, as any real material only has one IOR that affects both reflection and refraction :) Which is why the design of the physical. (BTW, a glass plate, being flat, really shouldn't show any bending of light due to refraction, which is why Thin is recommended for windows, car windshields, etc.)

[C4D] General Discussion / Re: Great artists to follow
« on: 2021-09-23, 11:53:45 »
Best thing I can suggest is searching our Facebook page or Instagram for "Cinema 4D" to see the artists who have already posted in the forum in the past, whose work we've showcased, and checking our blog. Unfortunately too many of them for me to go through listing them myself one by one :)

Because it pretty much never needs to be disabled, so it doesn't have to take up real estate among things that get turned on and off and adjusted regularly :)

Porting and API / Re: Corona for Rhinoceros :)?
« on: 2021-09-22, 12:46:34 »
There are no plans to convert Corona to any other host application other than the two we currently support, sorry.

Maintenance completed!

[C4D] General Discussion / Re: Skip beauty pass?
« on: 2021-09-19, 15:05:26 »
Depends on whether the pass requires rays cast into the scene. If it doesn't (e.g. material ID wouldn't need that), you can check "Render only masks" in the General tab of the render settings for Corona.

[C4D] General Discussion / Re: Render node
« on: 2021-09-17, 13:56:12 »
Only if you are using the NVIDIA AI Denoiser are they important for denoising. And that's the only thing a GPU is useful for on a render node.

[C4D] General Discussion / Re: C4D R25 & Corona
« on: 2021-09-17, 13:51:18 »
"V7 hotfix 2 " - the answer is in the post ;)

(You can try the daily build of 8 that came out yesterday, if you want to try Corona in R25 now - once that daily confirms there is no problem, we will be putting that R25 compatibility into Corona 7 and releasing that as hotfix 2)

[C4D] General Discussion / Re: Corona for Apple Silicon M1?
« on: 2021-09-16, 14:52:58 »
Just a reminder that the wording is we *want* 8 to have M1 support - this does not guarantee it will have, though; as noted, it's not an easy task. So this is not a promise that it will be in 8, just a statement we would like it to be. All depends how development goes and what unforeseen things crop up.

Right - as I said "So moving it out of that column was just a bit of a catch up on that new approach." - the new approach was adopted after we'd already started setting up the roadmap, and not all of it was edited to fit the new approach. Til now :)

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