Shadows
From ZBrush Info
In the Shadow subpalette you can set shadow properties.
Shadow: Enable shadow casting for the light selected here. Global shadow casting must also be turned on to render shadows. See Render:Render Shadows.
Intensity: Controls the opacity of the shadow. Range = 0 to 100. Default = 75.
Length: Since ZBrush scenes are not fully 3D, there is no information about the back sides of objects. The shadow renderer treats all objects as if they had infinite depth and the length of the shadow is set here. Range = 10 to 500. Default = 50.
ZMode: A shadow-casting mode that does take object depth into account and produces superior results in some cases. If an object is only partially visible, it may not produce complete shadows.
Uni: The Unified Shadows slider reduces noise artifacts from standard ZMode shadows, producing more unifed shadows and faster rendering.
If the Rays slider is set to a small value, this can produce more painterly shadows.
This slider is active only when the ZMode button is pressed.
Blur: Determines how crisp or soft the edges of the shadow are. Higher values result in softer edges. Range = 0 to 7. Default = 4. ----
Rays: Activates the Global Shadows feature by specifying the number of shadow-casting rays that are used to evaluate each pixol of a shadow. Higher values result in more accurate shadows, but with an increased rendering time. For best results, ZMode should be active if the number of rays is set to higher than 1. Range = 1 to 500. Default = 1.
Aperture: Affects the sharpness of shadow edges by simulating a narrow or a broad stream of light for each ray. Higher values result in wider light rays and softer shadow edges. Range = 0 to 180. Default = 90.
- The higher the number of rays, the lower you will usually want your Aperture to be set to. For example, 500 rays at the default Aperture will cause the shadows to all but disappear.
- It is recommended to set a scene’s lighting up with only 1 ray in order to allow quick adjustments. ZMode with only one ray will often result in unusual light artifacts such as holes in the shadows. Don’t worry about this. When you are satisfied with the lighting, increase the number of rays and decrease the shadow Aperture before doing your final render.
- Material such as with the Diffuse Curve shown can result in extraordinary renders when used in conjunction with Global Shadows.
To Learn About Types of Lights Click Here.
To Learn About Placing Lights Click Here.
