Hi Dr. Sassi,
Thanks very much for the help. Here is my result from putting my C4D render, with no changes to your project, over your provided exr, set to Difference:
https://drive.google.com/file/d/1PT-lbS-_xK_lrCYOgcslHZtNtAlcWvcn/view?usp=sharing

With just your provided exr, I am able to eyedrop different values of .18, 1.0, 1.7471

Maybe I should back up, because I'm struggling to understand color spaces in general. I only changed the Color Management because I was following a tutorial, otherwise I never touch anything relating to it. I have an image I want to render with Redshift that I set up several AOVs for. When I render it as a PSD at 32 bit, the beauty pass looks nothing like it should. When I render as an EXR, it looks correct, but in After Effects when I use EXtractoR, the beauty also looks incorrect.

What would be the most direct way of correcting the beauty pass's colors if I'm unconcerned about color space? If it requires a deep dive into understanding color spaces, I can do that and yes I'd appreciate your book suggestion. But if you know a way that didn't involve color spaces, that'd be even better.

Thanks,
Steve

I'm trying to render a multipass PSD but the beauty pass is very washed out and looks nothing like the RenderView in C4D. I tried rendering with Color Management set to ACES 1.0 SDR-video and Display Space set to sRGB, as well as rendering with Color Management set to Legacy (sRGB linear workflow).

Also, when I render an OpenEXR of the same scene, while it looks correct in After Effects, when I use EXtractoR to view the beauty pass, the colors are much darker than they should be.

How do I render out a correct looking beauty pass?

Hi Dr. Sassi,
Thanks so much for the suggestions and project. I'm picking it apart, trying to understand everything and have a couple questions.

• Why is the Plane inside a Connect object? I see that the Linear Fields don't work when it's turned off, but what is the Connect object's purpose?
• I see the function of both the Linear Fields, but I'm trying to understand the setup. The Vertex Map only has the Linear Field_Vertex (the gradient one) in its Fields and the Correction has the Linear FieldCorrection (the animated one) and Vertex Map in its Fields. Is the reason that the Vertex Map is defined only by the gradient of values, while the Correction Deformer is defined by both?

There's several new things I learned your response I'm trying to understand, but I also came up with a different solution that's way more time consuming but got me a decent result:

• Bake out the pillow case animation
• Use Edge to Spline on the opening of the pillow case (where the zipper will be) every 4 frames
• Use Pose Morph to animate between the Splines
• Use a Cloner Object for the zipper teeth and use the animating Spline as its path

Thanks again for the help!

I have a cloth animation of a pillow case that has the inner pillow being removed from the case. I'm trying to add a zipper, made up of a cloner and spline, to the seam where the pillow emerges. When I merge the zipper geometry to the pillow case, the zipper becomes distorted by the cloth physics.

Is there a way to attach the zipper so that it retains its geometry, while its spline follows the animating edge of the cloth?

Cloner bend problem.c4d

I have cloner objects cloned to the vertices of a spline. I'm trying to animate a Bend modifier on the spline, but when the Bend Strength goes above 12 degrees, the clones flip 90 degrees. How can I prevent this?

@Dr-Sassi Thank you so much for everything. It's taught me new and valuable techniques I'll continue to use. One last question: does the organization of the topology (straight rows and columns) or density matter when it comes to RS displacement, or is it just a matter of eliminating n-gons?

@Dr-Sassi Hi Dr. Sassi,
Thank you so much for this, it's exactly what I was looking for. My technique for the cutout was inspired by a previous post you helped me with.

And yes, I'm very interested to know how you remodeled everything, particularly the corners. As far as rendering, do triangles need to be avoided as well?

I am having difficulty adding displacement to a mesh I created from an extruded spline. I have an RS material I've created that has a displacement map. I've turned on Geometry Override, Tessellation, and Displacement.

Turning on Tessellation and Displacement gives me distorted geometry, as seen on the left in the screenshot.

Another approach I've tried is to use Volume Builder/Mesher/Remesher to get better geometry, but I could never get a suitable result. The edges were always uneven.

Are there any other options to try or is there a better approach altogether?

Here is the project:
https://drive.google.com/drive/folders/1B_vW1mxtGR6jTfqV12RZPsBq1yC8ErbW?usp=sharing

I want to adjust this spline handle to flat and not angled, so the line between this point and the next is perfectly straight along the x axis. I thought the shortcut was holding shift while adjusting but it doesn't work. I've tried every combination of Shift, Alt, and Ctrl, but nothing makes the handle snap to zero angle. How do I do this?

Hi Dr. Sassi,
Thanks as always for the help! Is this workaround what needs to be done whenever rendering motion blur with an alpha?

egg_test_v002.c4d
When I turn on Vector Motion Blur, my render does not have a fully transparent alpha. When I turn it off, this issue goes away. How can I render it with motion blur but without this problem? I've also tried rendering with straight alpha turned on and off.

Thank you so much for your help on this problem and the two others you answered today! I'll be sure to check out this project and the others.

Is it possible to take an object with dynamics, set an initial state, then use that state as a pose morph frame?

I want to animate a pile of cloth objects that starts from a state of rest, that is set with dynamics so it looks organic, and have it blown away with forces.

I'm having problems getting the dynamics to settle, so I thought Pose Morph might be a solution, if I can establish the initial pose, then a final pose of the clothes off screen. But copying/pasting poses from one object to another isn't work, even though it's the same object. Is it possible to creates 2 different poses with dynamics to use with Pose Morph?

I am using Cinema 4D 2024 and have several pieces of cloth that I simulated falling over a collider object. I want them to be at a state of rest after falling over the collider, so I can then use a wind or attractor to animate the cloth away.

I've attempted to use Init State for the cloth objects, which works except that the cloth never comes to a complete stop, it continues to move. I've tried raising Smoothing Iterations in Project Settings, I tried raising Stickiness and Friction values of the cloth objects, but they still move. What else should I try?

I

Project file: https://drive.google.com/file/d/1jZzFssLjJBV1z46e6dmdpw0YuAKoitCY/view?usp=sharing

I am trying to "attach" a button to a suit jacket I modeled, using the Connector Tag. I can get the button to follow the jacket's dynamics, but it continuously passes through the jacket. How can I avoid this? I've tried adjusting the button and jacket's thickness value, but it didn't help.

Hi Dr. Sassi,
Thanks for the help. I tried updating to 2024, lowering the render resolution to 2K, and setting my Materials' Texture Preview to "No Scaling" but the problem remains.

I think I misspoke in my initial post. The issue actually doesn't occur when I render, but only when I click Render Viewport. When I Render to Picture Viewer, the result looks good.

As long as my final render is ok, this isn't a crucial problem, but would you have any idea why Render Viewport renders textures at a lower res?

C4D file with textures and screenshots of the problem: https://drive.google.com/drive/folders/1GFFDrHq6Vb7SvFfkh4DtfLGIK79AyN44?usp=sharing

I have a model that I unwrapped and textured, using 2 different PSD files. The PSDs are high enough resolution, but when I render my model, they look very pixelated, even more pixelated than they do in the viewport. It seems to get worse as I get farther from the object.

I'm using the standard render and standard materials. I've set Anti-Aliasing to Best and raising the Min Level doesn't improve it. What else could be causing this problem?

Thank you so much Dr. Sassi! That was exactly the issue.

I have another somewhat unrelated question, but still pertaining to this scene file. Everything is incredibly slow for me, it takes about several seconds just to select a property in one of the Volume Builders, to the point where making changes in values difficult. I have a PC with pretty good specs, 2 GTX 3090s and 128 GB of memory, but my scene responds MUCH slower than the what I'm seeing in the tutorial I'm following.

I realize this could be a million different issues, but is there anything obvious I should check for better optimization? Thanks!

Shift Layer Diagram 051623.c4d
Shift Layer Diagram2 051623.c4d

I followed this tutorial on creating a Redshift foam material.

I'm trying to create multiple objects with this foam material and change the hue for each object. When I duplicate the entire Volume Builder, I don't see it in my render.

I can create a second cube within the the same Volume Builder, but it will remain the same color and also becomes much more transparent than the original cube.

I've included a second project that is using the same material, but after copying and pasting it, it's now doesn't appear in the render and I don't know how to get it back. I'm pretty sure these issues are related to the Volume builder object, but I still don't know what's causing it.