Recent Posts

1

[Max] Corona Goodies - User Contributions / Re: AgX in Corona

« Last post by piotrus3333 on Today at 11:24:12 »

More of AgX by Troy Sobotka - this time his Resolve version of it (quite different) married with a film look from Arri:
https://forum.corona-renderer.com/index.php?topic=41947.msg223544#msg223544

note: it does require a string option to turn off VFB's sRGB view lut so might be a bit more cumbersome to use.

2

Gallery / Re: The Cat

« Last post by morphtarget on Today at 11:08:02 »

Thank you so much. When I use cryptomatte renderelement as mask, this issue occurs. Do you have any solution for it?

3

[C4D] I need help! / Re: Multishader multipass masks?

« Last post by TeoRossi93 on Today at 10:55:44 »

Hi, would create 2 materials and give them each a material ID from the Advanced settings in the material. Scatter 2 objects and assign each a different mat. In the multipass settings, make 2 masks and enable Material ID and give them the same number as the materials. Render and you will have a different alpha for each. Here's an example.

Hi Bengamin,

thanks for the answer but unlickily this is not gonna work with my current animation setup.
I'm attaching my scene here so you could have a look at it. I can't change the rig at the moment, the only chance I have is to make the multishader masks work properly.

4

[Max] General Discussion / Re: Roughness implementation correct?

« Last post by piotrus3333 on Today at 10:40:34 »

The thing I find different about CoronaPhysicalMtl and energy conservation is actually too much energy reflected at low Base Color values like 0.02-0.04.

I'm talking nonsense - CoronaPhysicalMtl is actually a bit darker than StandardSurface.

What is odd though is that CoronaPhysicalMtl returns at F0 (furnace test, GeoSphere mesh, Base Color 0.18, full roughness, ior 1.5) less than 0.18 float.

Compared with VRayMtl here:

5

Gallery / Re: The Cat

« Last post by romullus on Today at 09:59:59 »

That's a cool cat and very nice looking smart materials! But what's with those ugly grey edges? Especially visible on the first couple images.

6

[Max] Feature Requests / Re: Render time and noise level to be shown in saved CXR render file

« Last post by Frood on Today at 09:16:01 »

Corona has always been a bit stingy with stats data (and logging) and a convenient option to access it would be nice (at least in CIE), yes. Additionally all stats should be included in EXR metadata as well at best.

But Corona already stores the most important info in CRXs. Use exiftool to extract it like:

Code: [Select]

exiftool -CoronaStats* -CoronaRenderStamp* yourfile.cxr
And note that the renderstamp is always saved into the CRX, even when not activated in the render settings. So you can use it to store various data additionally. if you write a batch with something like above, you can even integrate it into windows explorer context menu of CXR files (image).


Good Luck

7

Gallery / Re: Bokeh is your Friend

« Last post by piotrus3333 on Today at 08:47:28 »

I think under and over compensated bokeh is like axial chromatic aberration - it is reversed behind and in front of the focal plane: if it’s over compensated behind then it’s under compensated closer to the lens.

https://blenderartists.org/t/advanced-optical-experiments/695835
this is what I was playing with few years ago. might still be the best 3D implementation of lens aberrations.

8

Work in Progress/Tests / Re: Rendering with Corona

« Last post by Torsten Angerer on Today at 08:32:28 »

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!

9

[Max] Feature Requests / Render time and noise level to be shown in saved CXR render file

« Last post by Pooya Madani on Today at 08:23:59 »

When saving the render file as CXR, it would be great if we can see the noise level and render time for that render.

10

[C4D] I need help! / Re: Volumetrics in Physical Material cuts out reflect underneath

« Last post by steppes on Today at 07:54:13 »

but do not use displacement für the rabbit hole! ;)

But for this you do not need a rabbit hole. It is pretty simple: Earth diameter is about 12750km, the max height difference on earth between mount everest (+9km) and marianna trench (-11km) is 20km. 20km out of 12750km is about 0,16%. Since you can see the water, maraianna trench is out of equasion. The result is 0,07%.