How to get the reflection of Cube on the plan

[whelectric]

hi,there are one cube and one plan in my scence like attached picture , is there a way get a mask of the cube reflection that projected onto the plan ,then i can adjust the relection in PS /AE, thanks 

 

[peter_horvath · Accepted solution]

You can not have a mask, but render out a separate specular pass (AOV). Here's a page explaining the composite workflow: https://docs.arnoldrenderer.com/display/A5AFCUG/AOVs+for+Image+Compositing