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Fog 3D (PB only)


    This effect applies fog along the z axis, so that the distant parts of a 3D scene look hazier or disappear behind the fog. Fog 3D simulates fog by behaving as though there is a scattering medium in the air that makes objects look more and more diffuse as they get more distant along the z axis. To specify the Fog Start Depth, first select different elements in the 3D scene and check their z depth in the Info palette. After Effects uses the luminance value in the gradient layer (grayscale layer) and applies it as the scattering medium. You could, for example, create a gradient layer from a swirling, drifting texture to create a more atmospheric fog effect. For best results, make sure that the dimensions of the gradient layer are the same as the footage, not the composition.

    For more information, see the After Effects product section on Adobe's Web site.