by default, is translucent so you need to set up self shadowing,
otherwise hair appears glowing, like nylon. The darker the hair
color is, the more important the specular color and highlights become.
There are three directional
lights in this scene. In the render you did in the previous steps,
Marion’s hair appears blond and glowing, even though the default
hair color is dark brown, as in the scene view. This apparent hair
color discrepancy occurs because:
- hair is by default translucent (like
a glass tube)
- the hair is being lit by all three lights,
therefore the intensity of the light is tripled
- there are no shadows, so all the hairs
In these next steps you
set up shadows on all three lights.
To set up shadows and self shadows on
Window > Outliner.
- In the Outliner menu,
select Show > Objects > Lights.
- Select one of the three directional lights.
- In the light’s Attribute Editor,
go to the Shadows section and in the Depth Map
Shadow Attributes subsection, turn on Use
Depth Map Shadows.
Normally you would increase
the Filter Size to blur the light
in the hair for realism, and increase the Bias, which
sets how far the light filters through the hair. These attributes
were set for you in the scene.
- Repeat steps 3 and 4 for the other two
- Render the hair to see the changes.
The shadows on the hair
are hard and there is very little specularity. You fix this in the
To create specular highlights on hair
- To select the hair system, drag around
the hair curves and select
Hair > Convert Selection > To
to the Shading section in the hairSystemShape1
tab of the Attribute Editor and set the
the Specular Color box and set
the values as shown in the image below.
- Increase Specular Power to
- Render the hair to see the changes. The
hair looks much more natural now.