The Render Each Light Pass Python plugin saves a render for each light in your scene, which can be used to composite and edit the light intensity in Photoshop or other compositing software.
The EXR format must be enabled in Capture Settings (ctrl +p) for the plugin to work. Once the images have been saved, load them as layers in your compositing software and set the blend mode to Linear Dodge (Add). You can then adjust the opacity or exposure of the individual layers. Watch the video above to see this workflow in action.
Type: Free – Author: David Girard