These controls are used to select the extents of the fog within the scene. To pick a value, click-drag the Pick button to an area on the image being viewed where the plane is to be located.

The near plane is used to select the depth where the fog thins out to nothing. The far plane is used to select the depth at which the fog becomes opaque.

This option scales the Z-buffer values by the selected amount. Raising the value causes the distances in the Z channel to expand, whereas lowering the value causes it to contract. This is useful for exaggerating the fog effect.

This option displays and controls the current fog color. Alpha adjusts the fog's transparency value.

Use this control to adjust the opacity of the fog.