Sapphire Plug-ins for Open Fx: ZFogExponential


Mixes a fog color into the source clip using depth values from a ZBuffer input. The fog starts at the nearest depth and increases exponentially to the farthest depth at a rate depending on the Fog Density.

In the Sapphire Stylize effects submenu.


Source: The clip to be processed.

ZBuffer: The input clip containing depth values for each Source pixel. These values should be in the range of black to white, and it is best if not anti-aliased. Normally black corresponds to the farthest objects and white to the nearest, though this can be adjusted using Z Buffer parameter.


Load Preset: Push-button .
Brings up the Preset Browser to browse all available presets for this effect.

Save Preset: Push-button .
Brings up the Preset Save dialog to save a preset for this effect.

Fog Color: Default rgb: [0.5 0.5 0.5].
The fog color should normally match the sky or background color of the source clip. Use gray for mist, brown for smog, blue for underwater, etc.

Fog Density: Default: 0.7, Range: 0 to 1.
The density of the fog.

Z Buffer Type: Popup menu,  Default: White is Near .
How to interpret the values in the Z buffer.
Black is Near: Black pixels in the Z buffer indicate that the object at that point is near (close to you), and white means far away.
White is Near: White pixels in the Z buffer indicate that the object at that point is near (close to you), and black means far away.

Zbuffer Use: Popup menu,  Default: Luma .
Determines how the ZBuffer input channels make a monochrome z image.
Luma: the luminance of the RGB channels is used.
Alpha: only the Alpha channel is used.

See Also:

Sapphire Plug-ins Introduction


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