Photoshop Layers is a Lightroom plugin that enables photos in Lightroom to be used as source layers for a composite image in Lightroom, via a Photoshop layered image, in a non-destructive way.
Even after the layered image is created and edited in Photoshop, then imported back into Lightroom as a new composite image, changes to the original source images in Lightroom are reflected through the Photoshop edits and back into the composite image in Lightroom.
Photoshop Layers has been successfully tested with Lightroom 4, Lightroom 3, and Lightroom 2. (Though for Lightroom 3, you must have at least version 3.5)
Detailed instructions on how to install Photoshop Layers are available HERE.
Photoshop Layers is cross-platform and it works on Mac OS X and Windows.
- Fix for the registration system.