The Refine Selection Tool allows you to more precisely define selection edges in your image. A selection needs to be in place before refinement can be carried out.
The following settings can be adjusted from the context toolbar:
The Output setting's Selection and Mask options are ideal when applying adjustments and filters after refining the selection area. New layer and New layer with mask are suited to cutting out and compositing; colour 'decontamination' is also used for achieving high-quality cut-out results.