This page gives some basic details about the Atmospheric Effects render element and how it is used in compositing.
The Atmospheric Effects Render Element stores only atmospheric or volumetric participating media such as Environment Fog or. This render element can then be used to enhance or color-correct just the atmospheric component of the image during the compositing process.
When atmospheric effects or fog is included in a scene, they will render into the Beauty|RGB channel, and should also be output as the Atmospheric Effects Render Element channel for compositing use.
UI Path: ||Shading viewport|| > Shader Tree > Add Layer button > V-Ray Render Elements > V-Ray Additional Outputs > Atmospheric Effects
This render element is enabled and controlled through the V-Ray Additional Outputs properties.
Enable Atmospheric Effects – Enables the Render Element.
Name – Sets a custom name for the Atmospheric Effects Render Element.
Deep Output – Specifies whether to include this Render Element in deep images.
Apply Color Mapping – Applies the color mapping options specified in the Color mapping rollout of the V-Ray Main Render Settings.
The Atmosphere Render Element is useful for changing the appearance of the atmosphere and volumetric effects in a rendered image using compositing or image editing software. Below is an example of its use.
Atmosphere Render Element, with fog
generated by V-Ray Environment Fog
Original Beauty composite
Color of atmosphere changed and intensity increased
The Atmospheric Effects Render Element is added to the render to form the final image.