Dr. Sassi
I meant to go through your original post more thoroughly to understand what you described and forgot to do that. having limited time with my partner, we rushed out the response prematurely sending it. sorry for that!

Thank you again!

@Dr-Sassi

Thank you, the project you sent solved the Poly FX issue.

We are still having a problem with the lighting issue. When I first opened your project and rendered the rim in the Redshift RenderView window, the lighting issue seemed to be resolved. But the next time we rendered it and ever since, the light issue reoccured. Please see the attached images showing what we are seeing here.
We need the rim to be consistently lit as the Poly FX wipe on.

Rim lit before Poly FX wipe animation starts.

1st frame of Poly FX animation: the rim goes dark where the Poly FX are not yet triggered.

Dear Dr Sasi,

We are experiencing difficulty animating Poly FX around the concave gold rim using a Torus and or a Radial Field. The Polys are going chaotic when the fields animate on or off. The animation begins at frame 20.

Also, for some reason, once the animation begins the rim goes dark.

See link to project. Thank you.

https://drive.google.com/file/d/1R-koHC_iw52tra19Umi-Thc6Vp5uNq37/view?usp=sharing

Thanks,
What you sent worked!

The only issue now is that we are rendering this out with an alpha channel, so I believe the issue is that C4D does not recognize the alpha because it is generated at the level of the material. So we are seeing all the particles when rendering with an alpha channel, dark particles mixed with the bright ones. We can work around this by using the Extract plugin in After Effects, but I am wondering if there is a way to get the alpha to respect the particles that are not being hidden by the noise in the material.

Thank you!

Hi Dr Sassi,

I have followed this tutorial (https://www.youtube.com/watch?v=6ySJGioTsis&t=1s)
showing how to get an object to flicker using fracture, and a Plain effector driven by a random animated noise. I have this working, but I am trying to use the fracture object as a particle in the C4D particle system via the RedShift tag. Currently, in the attached project, all the particles turn on and off together. Is there a way to have them go on and off independently of one another to get a flickering effect?

https://drive.google.com/file/d/1UhmBPr9-JQav2mQ7HVaX_h1y8Z-1eQW-/view?usp=sharing

Thank you

Thank you again for the help and the material!

The new material seems to work. Do you know why this is? I still do not understand why the reflection showed very clearly when doing the first pass of the render, but then finishing it, it mostly completely disappeared.

Don't know why the textures did not go through. Here they are.
The black glass material is an experiment; we are trying different materials to see if any reflect better than others.

Thanks for the help!
Mark

https://drive.google.com/file/d/1SgQ9cXNY10MAxFMfsUOIWRvLLzpP9I3a/view?usp=sharing

Dear Dr Sasi

We are trying to reflect particles from an emitter off of the "Know Thyself" text in the linked project.

We can see the reflection clearly in the Redshift Render window, but when outputting the animation, we do see the reflection at the beginning of the render as it is calculating the Irradiance Point Cloud, but when it does the final pass, these reflections are greatly dimmed or completely gone.

What setting will need to be changed in order to keep the reflections visible?

https://drive.google.com/file/d/1dO3_m1FxDjWHeUtQWLG1Vc891k_wC6qv/view?usp=sharing

Thank You
Mark

Thank you, this helped!

Hi Dr Sassi

Please see the attached file with a stripped-down C4d project, and note in the attached images that a patch of the ground cover disappears between frames 880 and 881. Something similar also happens between frames 896 and 897 in a different spot. We have eliminated all animation, and the settings seem otherwise identical between the 2 frames.

https://drive.google.com/file/d/11nMqZJqqihZb5W25pwuz2TySBUsdnQ4e/view?usp=sharing

Please advise.

Thank you,
Mark

Thank you for the additional info. I will take a look at what you sent when I have a chance. Don't know what you mean by a "sketch"?

Also, I am not a student, I work for a nonprofit creating materials to support their educational program.

Thank you I will give that a try!

Hi Dr Sassi,

Using RS Environment, we are animating the Emission Color and thickness using Camera under Ray contribution of fog to simulate morning fog to clear daylight. After looking this up on the internet and trying different render setting we we can not eliminate a flickering effect in output renders when playing them back.
The color will say even then will jump fairly dramatically from one frame to the next. You can see in the image I have done a split screen of 2 consecutive frames. I have uploaded a striped down project and one material texture needed to duplicate the issue. Do you know anything that might eliminate this drastic jump in color from frame to frame?

If you render from this project starting at frame 110, you should see the issue by frame 128.

https://drive.google.com/file/d/1JuCYkcAqKTndRO5JVNxrxIKO72amScsl/view?usp=sharing
https://drive.google.com/file/d/1acRxB8HCUZxGGz2vP2L1u5jdCPYAgTbv/view?usp=sharing

Thanks Mark

Thank you!

Do you know how long I have been searching for fog and cloud tutorials! I have been looking for info on this for probably 2 years, this is the best tutorial I have seen and never came up in my searches.
They need to add Fog and Cloud to the tutorial name or at least the keywords!

You saved the day once again!

Thank you, Dr Sassi!

Wondering if there is a way to have the fog extend outside the bounds of the spline so we don't see the hard edge of the shape?

Hi Dr Sassi,

We would like to get fog to swirl. We have tried using a spline with Volume Builder but can not seem to incorporate a noise to give it organic randomness.

Here is a link to the project, https://drive.google.com/file/d/1WKM7pz9hFsHSPOXrWQ1s-vms8iqUhkz8/view?usp=share_link

Please advise.

Thank you

Hi Dr Sassi,

I have tracked footage in C4d, and created a background from the footage and all is working correctly except I need the tracked footage to start later, so I thought I would set the "Start Offset to the number of frames I need and move the Solved camera keyframes to the same offset, but the video background will only start on frame 0 even though I have the offset set to 15.

Any idea what might be going on? I would upload the project but the footage is too big.

Thanks, Mark

Thank you! It works perfectly.
Also, thanks for the information about the image size, it does help to know that they can be wider.

Hi Dr Sassi,

I am trying to use the Playing Cards from the asset browser and am having trouble. I think I understand how this is supposed to work, I can go into the material and activate the card I wish to show, So I set the count to 5 and select the cards to show in the materials "Multi Shader" it looks correct in the work window but when rendering for Redshift only the Joker is rendered on all 5 cards. Is there something I can do to get this to work? I am also adding a random effector.

[Screenshot 2025-01-13 at 9.04.51 AM.png](Image dimensions are too big)
Also, why is attaching an image so limited here? 500x500 is so small! Seems like it should be a file size limit, not a dimension limit.

Thanks, Mark!