Render Layers are used to isolate objects as a separate primary render. More information can be found in the Render Layers section.  Render Layer AOVs further break down the render layers into any of three AOV component types:

  • Black Layer Shadows - Layer Shadows will output shadows of objects with a layer ID greater than 1. This option requires that the Alpha channel be enabled, otherwise the result will not be visible.
  • Layer Reflections - Layer Shadows will output shadows of objects with a layer ID greater than 1.
  • Layer Shadows - Layer Shadows will output shadows of objects with a layer ID greater than 1.