Virtually anyone coming from Photoshop with basic knowledge of the app uses adjustment layers. You can add a layer that applies filters to a mask that leaves th

Virtually anyone coming from Photoshop with basic knowledge of the app uses adjustment layers. You can add a layer that applies filters to a mask that leaves the layers beneath untouched. They're incredibly powerful. It's rare I have a project that doesn't use them, and it's among the reasons I wouldn't even consider using GIMP for anything new, despite wishing I could use the app.