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White dots 2

Posted: Wed Sep 30, 2015 11:58 pm
by gold
Hello,

Is there updated info on how to get rid of these? I have past info: reduce blur.
I cant even find blur.

thank you

Re: White dots 2

Posted: Thu Oct 01, 2015 9:32 am
by TRRazor
The "white dots" in your image are called fireflies and are a result of overpowered lights in your scene hitting specular surfaces.
Try lowering the power of your lights and increasing the exposure settings to get a visible scene, even under low lighting conditions.

In the "Settings" tab of OctaneRender you'll find the "Imager" node, where you can find "Hotpixel Removal" and "Caustic Blur".
Setting the Hotpixel removal to lower settings than 1 will reduce fireflies while degrading image quality (blurring it).

Changing the caustic blur will only limitedly help with your problem, so try the above ones first.

I recorded a video tutorial about scene lighting in OctaneRender last year - maybe this helps you in some way: https://vimeo.com/113861642

Re: White dots 2

Posted: Fri Oct 02, 2015 11:56 am
by face_off
Pls click on the Octane Notes link in my signature for additional info on rendering noise.

Paul

Re: White dots 2

Posted: Fri Oct 02, 2015 11:23 pm
by gold
Thanks guys for the excellent help.

As it turned out, it was less a firefly problem, and more like orange noise in the shadow areas.
The orange kind of matches something else in the shot so I ended up keeping it.

Played with the exposure, and ray epsilon, but didn't seem to help.

Oh, on a sidenote:

I realized I use about the same 7 settings in each render, but have to continually DIG
to locate them. Is there some way to "collect" all:

1. preferred controls into one panel?

2. my preferred settings into one push button, or panel?

thanks

Re: White dots 2

Posted: Sat Oct 03, 2015 12:49 am
by face_off
As it turned out, it was less a firefly problem, and more like orange noise in the shadow areas.
Reduce Kernel->Path Termination Power (to about 0.1).
I realized I use about the same 7 settings in each render, but have to continually DIG
to locate them. Is there some way to "collect" all:
Set your preferred setting values and rightclick the Settings tree and "Save as Default"

Paul

Re: White dots 2

Posted: Mon Nov 09, 2015 10:53 am
by Andygraph3D
It would be nice to something like ...

Re: White dots 2

Posted: Mon Nov 09, 2015 10:42 pm
by face_off
It would be nice to something like ...
You can already do this by selecting the material name you want to paste to and then selection the rightclick menu option "Paste Glossy to all Materials named [material name]".

Paul

Re: White dots 2

Posted: Tue Nov 10, 2015 8:49 pm
by gold
Set your preferred setting values and rightclick the Settings tree and "Save as Default"

actually, for the wishlist, I would request MULTIPLE CHOICES of default settings -- since I have numbers
of preferred settings.

thanks!

Re: White dots 2

Posted: Tue Nov 10, 2015 10:06 pm
by face_off
actually, for the wishlist, I would request MULTIPLE CHOICES of default settings -- since I have numbers
of preferred settings.
If you have a number of favorite rendertarget settings, use the Export and Import Rendertarget Settings menu options.

Paul

Re: White dots 2

Posted: Wed Nov 11, 2015 3:25 am
by gold
Sounds good Paul, look forward to trying it!

thanks