A bit of talk about RedSDK Materials for setting the IOR/Reflection/Glossiness from the Sheen Calculator I thought I would share them for you to test/try out in your renders.
Basically this is mimicking the roughness that occurs in reality.

RedSDK currently does not take into account the rougher (more matt) a material is using the Glossiness factor so the IOR and Reflection values need to adjust according.
Light behaves better without the burning/glowing of white materials etc. Fresnel ticked (on)!


RedSDK - IOR Curve for Glossiness (BRDF) Plotting:


Matt Emulsion walls:
Sheen Level of 2% (Flat) which covers many emulsion paints available.
IOR = 9.326
Fresnel = ticked (on)
Reflection RGB = 20,20,20 (grey)
Glossiness (BRDF Reflection Value U and V) = 0.9628

Carpets:
Sheen Level of 1% (Flat)
IOR = 9.872
Fresnel = ticked (on)
Reflection RGB = 18,18,18 (grey)
Glossiness (BRDF Reflection Value U and V) = 0.9849

Furniture Eggshell Paints:
Sheen Level of 40% (Eggshell)
IOR = 1.827
Fresnel = ticked (on)
Reflection RGB = 118,118,118 (grey)
Glossiness (BRDF Reflection Value U and V) = 0.3089

Furniture Satin Paints, Lacquers and plastics:
Sheen Level of 65% (Semi Gloss)
IOR = 1.689
Fresnel = ticked (on)
Reflection RGB = 182,182,182 (grey)
Glossiness (BRDF Reflection Value U and V) = 0.0761

Shiny Ceramics:
Sheen Level of 80% (Gloss)
IOR = 1.739
Fresnel = ticked (on)
Reflection RGB = 221,221,221 (grey)
Glossiness (BRDF Reflection Value U and V) = 0.0117

To Be Continued.....

Daz, where are you finding the Glossiness factor?

Henry H

Daz, where are you finding the Glossiness factor?

Henry H

Henry,
It's the BRDF reflection value.
Daz should show it as it's in TC 

Sorry about that Henry... the other program I use calls it Glossiness but have updated it with TC's/RedSDK name for it... Thanks Dean  ..:

Thanks Darrel, very good info, so just keep bring them on

Torfinn

Thanks Darrel, very good info, so just keep bring them on

Torfinn

I will do....

I will put together a drawing (ePack) that is simple both in lighting with a few example materials for us to test and critique.

A little example using these settings:

Darrel,

    stunning work, which shows what can be achieved.
    So, what happened to the bottle of wine? 

Regards Tim

Quote from: Darrel Durose on February 12, 2018, 06:46:42 PM

A little example using these settings:

Darrel,

    stunning work, which shows what can be achieved.
    So, what happened to the bottle of wine? 

Regards Tim

Thanks Tim..

Haha... the bottle of wine, forgot about that one.... Going to put that on one of the shelves in that drawing... 

Going to use this one and put a selection of materials on the shelving at the back I think, Epack it up... and do a larger render of it.. 

Thanks for this useful information.  The few times I have looked into RedSDK materials elsewhere, I have gotten bogged down, but this is far more accessible.


Jeff

Thanks for this useful information.  The few times I have looked into RedSDK materials elsewhere, I have gotten bogged down, but this is far more accessible.


Jeff

Hi Jeff...

Yeah it makes more sense using something we can relate to in the real world...

I will put together a drawing (ePack) that is simple both in lighting with a few example materials for us to test and critique.

Really looking forward to this.   

Found some of it in another thread (http://forums.turbocad.com/index.php/topic,22523.0.html).


Jeff