Is there a way to apply one smart filter to multiple layers?
I'm trying to figure out a better CS5 Photoshop sharpening workflow using smart filters. I am working with scanned film.
Before sharpening, I create a new layer above the background layer and do all my cloning on there (mostly dust removal). Then, in order to sharpen, I select the "Cloning" layer and the background (and any layer with actual content), duplicate them, and merge them into one layer. This is the layer that I apply the unsharp mask to (after making a selection of all edges).
I would like to use the unsharp filter as a smart filter, but I don't know how to do this on multiple layers.