IOR for Dark human skin

dylan_borg_d673e29d8d

I have been looking for an answer by google, for a few weeks now.  I never did find an answer for the question of IOR, for Dark human skin.  Close to 100% of the time, I use Victoria 4 and Victoria 4.2.

Nice looking MAT settings I have been using:  119 78 58, specular 51 72 77.  Iray Colour effect is set to: Scatter and Transmit. DAZ forums I found a few minutes ago, did not cover dark skin, other than mentioning the same settings would wash over dark skin.

I also have great difficulty keeping eye brows pure black, instead of grey.  And in other renders, making eye brows a strong red colour.

So 3 questions:

1 - What is a good IOR for dark human skin.  

2 - How to prevent eye brows to being super shiny reflective

3 - How to force eye brows to be red when using a red haired character ?

ChangelingChick

dylan_borg_d673e29d8d said:

1 - What is a good IOR for dark human skin.  

All skin is about the same. There's a negligible difference. Different types of skin on different parts of the body vary. Here's a nice paper on it http://bmlaser.physics.ecu.edu/literature/2006 03_human skin index.pdf

 

dylan_borg_d673e29d8d said:

2 - How to prevent eye brows to being super shiny reflective

You can make them black on your spec maps or not paint them and use fibermesh.

 

dylan_borg_d673e29d8d said:

3 - How to force eye brows to be red when using a red haired character ?

Wow Brow in combination with Brow Remover for Daz Studio is your best solution for texture based brows. Otherwise a fibermesh with a red haired shader on it.