The Raw Shadow Render Element stores information about cast shadows calculated from the lighting in the scene. It is a "reverse" image in the sense that white areas indicate shadows while black areas indicate no shadow.
UI Path: ||V-Ray|| > Render Elements > Raw Shadow
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Enable Deep Output – Specifies whether to include this render element in deep images.
Color Mapping – Applies the color mapping options specified in theColor mapping rollout of the V-Ray tab in the Render Settings window to this render element.
Consider for Aa – When enabled, anti-aliasing is used where possible.
Filtering – Applies an image filter to this channel.
Derive Raw Channels – Generates data in the raw channels by combining the respective color and the filter color channels.
Vfb Color Corrections – Applies the post render color adjustments made from the VFB.
Denoise – Enables the render element's denoising, provided the Denoiser render element is present.