Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Tutorials & Guides => Topic started by: VadoZe on 2013-10-19, 08:27:37

Title: Light types
Post by: VadoZe on 2013-10-19, 08:27:37

In this topic I offer  "coronauts" to share how they, exactly, are doing all sort of lights in the scene with desirable settings of light source and nearby materials!

Title: Re: Light types
Post by: VadoZe on 2013-10-23, 10:20:43

OK then, my trouble!
CoronaLight in chrome hemisphere, White 0,6 on box flipped inside - fireflies not go away, turned off visible in reflections they gone! Is it right?

Title: Re: Light types
Post by: maru on 2013-10-23, 11:12:06

This is normal because the fireflies you see are essentially reflection caustics. To get rid of them you can try:
-decreasing glossiness of chrome material
-decreasing MSI in render settings
-switching to bidir/vcm to get proper caustics (which will probably look horrible)

You can also try adding some kind of geometry blocking the light from reflecting from chrome surface or use IES/spotlight/disc light.

Title: Re: Light types
Post by: VadoZe on 2013-10-23, 11:27:42

I tried render whole image reducing MSI=3, it helps-noise has smaller grain, but it still there after 10h...(maybe there was another source - but i think it lights)!!
Changed chrome to white - they still there!
Increased LSm-better but not enough!
It must be high intensity - 600... but how then do point lights?
How U do them?

Title: Re: Light types
Post by: VadoZe on 2013-10-23, 11:43:12

IES seems helps, waiting for more passes!