Fog
From ZBrush Info
The Fog subpalette provides controls to obtain a fog effect; different depths or areas of the canvas may be partly or fully obscured by a foggy or smoky haze.
Controls
Intensity: Sets the intensity of the fog at its far point. Range = 0 to 100%. Default = 100%.
Depth1: Depth1 is the near point of the fog effect. There is no fog effect at this distance. The fog effect becomes stronger as depth increases. Type in the Z depth directly or click and drag from the slider to the canvas to set the value; pick a object a pixol at the depth you want the fog to begin.
Depth2: Depth2 is the far point of the fog effect. There is full fog at this distance. Set the value as for Depth1.
Fog Color 1: Fog Color 1 is the color of the fog at the near point of the fog effect. Set by selecting a color with any of the color pickers and clicking on the Fog Color 1 patch. You can also click and drag from the Fog Color 1 to any part of the canvas or interface to pick a color.
Fog Texture: You can also colorize the fog by using a bitmap texture. You can produce other environmental effects, such as smog, by using a fog texture. Click and hold on the Fog Texture patch to access the texture sub-palette and choose a texture. It will be stretched over the entire canvas area. Each pixel of the texture will determine the color of the fog at that location.
Note: A Fog Texture will override Fog Color 1 and Fog Color 2 settings.
Fog Alpha: You can further modify the fog effect by using Fog Alpha. Click and hold on the Fog Alpha patch to access the texture sub-palette and choose a texture. It will be treated as a grayscale alpha and stretched over the entire canvas area. Each pixel of the alpha will determine the intensity of the fog at that location. When the alpha is white, there is maximum fog. When the alpha is black, there is no fog effect.
Fog Color 2: Fog Color 2 is the color of the fog at the far point of the fog effect. Set as for Fog Color 1
Left: A fish with with no fog effects. Right: Same fish with fog effects, Depth 1 set on its nose, Depth 2 set on its tail and a light blue Fog color 1 and Fog Color 2.
Fog Curve: Clicking on the collapsed Fog Curve area of the sub-palette expands the Fog Curve to its full size. You can adjust the intensity of the fog between the near point (Depth 1) and far point (Depth 2) by adjusting the curve.
For example, setting the left end of this curve to the max value and the right end to the min value would render a scene with the closest objects being the foggiest, and the most distant being the clearest.
To Learn About Preview Shadows Click Here.
To Learn About Environment Click Here.
To Learn About Render Adjustments Click Here.
