Weird Noise in Blender Cycles Hair

Support Lighting and Rendering
1

I’ve rendered a character’s hair in Blender Cycles and I’m getting a strange result. It looks like this: https://dl.dropboxusercontent.com/u/5171857/ezgif-2308112385.gif
I’m not quite sure what the problem is. Are my samples not high enough? (I’m currently using 49 samples.) I don’t really think that the samples are what’s causing it to do this because I thought that grain caused by low samples was static, not moving. This problem only occurs when my mesh is moving or the camera is moving, by the way.

What should I do to resolve this issue? If the samples are the problem, what would be a good sample number to ensure that this issue doesn’t occur?

2

I’ve found that it’s not actually the samples, but it’s the hair literally jumping all over the place. Any ideas of how to fix this?

3

Hi. it is hard to fix without the .blend.
Append your fur object in a empty .blend and share, we can look in to.

Cheers, mib

4

Sure. I was going to do that earlier, but I couldn’t figure out how to replicate the problem without giving away my model. I ended up just duplicating my file and making a sphere with hair on it. http://www.pasteall.org/blend/40956

5

Hi, don´t know what you expected.
49 samples are really low, rendered scene with 100.
Switch all MIS settings on for faster noise reduction at World, Sun.

hairy.png720×720 683 KB

Cheers, mib

6

Even with MIS turned on, the render is much too slow. If upping the samples is the only way to correct my problem, I think my best bet would be simply to bake my fur into an image texture. Thanks for the help.