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Huge scaled objects rendering distorted

Posted: Sun Dec 06, 2020 10:11 pm
by atoyuser1
Hi, I am getting very strange distortions on an object when I scale it to enormous sizes. Here is what it renders as at a standard scale:
Small.png
Here is what happens when it's scaled about 1000%:
Large.png
Any clues why?

I am using R23 with PR5 on a Mac running Catalina

Thanks

Re: Huge scaled objects rendering distorted

Posted: Sun Dec 06, 2020 11:06 pm
by galleon27
Increase Ray epsilon in Render Settings.

Re: Huge scaled objects rendering distorted

Posted: Mon Dec 07, 2020 9:07 am
by atoyuser1
galleon27 wrote:Increase Ray epsilon in Render Settings.
Great, that worked, thanks!
Changed fro 0.0001 to 0.001.

Are there any downsides to this?

Re: Huge scaled objects rendering distorted

Posted: Mon Dec 07, 2020 4:11 pm
by james_conkle
As far as I'm aware raising this settings will prevent light from bouncing between very close surfaces. Since you're at such a large scale I would think the only result would be positive. I bet the documentation has a better explanation.

Re: Huge scaled objects rendering distorted

Posted: Mon Dec 07, 2020 4:36 pm
by atoyuser1
james_conkle wrote:As far as I'm aware raising this settings will prevent light from bouncing between very close surfaces. Since you're at such a large scale I would think the only result would be positive. I bet the documentation has a better explanation.
Thanks. I am zooming out from earth, so I imagine I might notice when I zoom back in. I shall experiment

Re: Huge scaled objects rendering distorted

Posted: Mon Dec 07, 2020 8:47 pm
by atoyuser1
I can confirm this absolutely has an effect when rendering a smaller object. Shame there isn't a way of keyframing the Ray Epsilon

What I'm having to do is render 2 versions and fade the Epsilon in Premiere

Re: Huge scaled objects rendering distorted

Posted: Mon Dec 07, 2020 10:48 pm
by aoktar
atoyuser1 wrote:I can confirm this absolutely has an effect when rendering a smaller object. Shame there isn't a way of keyframing the Ray Epsilon

What I'm having to do is render 2 versions and fade the Epsilon in Premiere
You can animate on the render

Re: Huge scaled objects rendering distorted

Posted: Tue Dec 08, 2020 8:53 am
by atoyuser1
aoktar wrote:
atoyuser1 wrote:I can confirm this absolutely has an effect when rendering a smaller object. Shame there isn't a way of keyframing the Ray Epsilon

What I'm having to do is render 2 versions and fade the Epsilon in Premiere
You can animate on the render
Amazing, thanks