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This page provides information on the V-Ray Aerial Perspective Atmospheric Effect.

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The VRayAerialPerspective atmospheric effect simulates the aerial perspective effect, the result of viewing objects from a distance through the Earth's atmosphere. The effect is similar to fog or haze. This atmospheric effect works together with VRaySun and the VRaySky to calculate an approximation to the aerial perspective effect.

While this effect renders faster than VRayEnvironmentFog and produces a similar result, it is only an approximation. For example, it does not produce volumetric shadows.

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UI Path

 

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Rendering menu > Environment > click Add > select VRayAerialPerspective

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Parameters

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visibility range (in meters) – Specifies the distance at which the fog has absorbed 90% of the light coming from objects behind it. Lower values make the fog appear denser, while larger values reduce the effect of the aerial perspective. The value is in meters and is converted internally based on the currently selected 3ds Max units. For more information, see the Visibility Range example below.

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filter color – Affects the color of the inscattered light. For more information, please see the Filter Color example below below.

primary visibility – When disabled, the aerial perspective effect will only be seen by secondary rays (e.g. refractions, reflections, etc.).


 

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Example: Visibility Range


This example demonstrates the effect of the Visibility Range parameter.  Lower values make the fog appear denser, while larger values reduce the effect of the aerial perspective. The value is in meters and is converted internally based on the currently selected 3ds Max units units.

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Example: Atmosphere Height

 

This example demonstrates the effect of the Atmosphere Height parameter.  Lower values can be used for artistic effects. The value is in meters and is converted internally based on the current 3ds Max units. Note that this is dependent on the scene scale, and in our example relatively low values were sufficient due to the small scene scale.

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minLabelVisibility Range = 30 meters
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maxLabelVisibility Range = 600 meters
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Visibility Range = 30 meters

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Visibility Range = 60 meters

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Visibility Range = 120 meters

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Visibility Range = 180 meters

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Visibility Range = 240 meters

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Visibility Range = 300 meters

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Visibility Range = 360 meters

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Visibility Range = 420 meters

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Visibility Range = 480 meters

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Visibility Range = 540 meters

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Visibility Range = 600 meters

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minLabelAtmosphere Height = 10 metersmaxLabelAtmosphere Height = 1 1 meter
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maxLabel10 meters
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Atmosphere Height = 10 meters1 meter

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Atmosphere Height = 9 2 meters

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Atmosphere Height = 8 3 meters

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Atmosphere Height = 7 4 meters

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Atmosphere Height = 6 5 meters

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Atmosphere Height = 5 6 meters

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Atmosphere Height = 4 7 meters

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Atmosphere Height = 3 8 meters

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Atmosphere Height = 2 9 meters

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Atmosphere Height = 1 meter10 meters

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Example: Affect Environment Rays

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Example: Filter Color


Affects the color of the inscattered light. In the example below the filter color is set to red (H=0,S=108,V=255) and we are adjusting the Hue value.

 

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minLabelFilter color hue = 0
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Filter color hue = 0

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Filter color hue = 26

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Filter color hue = 51

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Filter color hue = 77

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Filter color hue = 102

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Filter color hue = 128

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Filter color hue = 153

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Filter color hue = 179

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Filter color hue = 204

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Filter color hue = 230

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Filter color hue = 255

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