To refine the edges of a selection:
- Create a selection. With your selection tool still chosen, click Refine Edge on the Options bar or press Ctrl-Alt-R/Cmd-Option-R.
- Set the zoom level to 100% or 200% by pressing Ctrl- +/Cmd- +.
- To control how the selection previews in the document, choose from the View menu.A
You can also choose a view by pressing the letter shortcut that’s
listed on the menu, or cycle through them by pressing F. We’re partial
to these views:
Overlay (V) to view the selection as a Quick Mask (useful for viewing areas beyond the selection).
On Black (B) to view the selection against a black background (useful if you’re going to copy the selection to a dark background or if the background areas are light).
On White (W) to view the selection against a white background (useful if you’re going to copy the selection to a light background).
On Layers (L) to view the selection on top of the layer immediately below it (useful for judging the selection edge against an underlying layer, if there is one).
- Check Smart Radius to allow the Radius to adapt to hard and soft edges in the imagery.
If you want to widen the refinement area to include pixels just outside the selection edge, increase the Radius value (use the scrubby slider).
To view the current refinement area, check Show Radius (J), then uncheck it before proceeding.
- At any time, press P to toggle between the original selection and the refined one.
- In the Adjust Edge area, move any of the following sliders, if desired:
To smooth out small bumps or jagged edges, raise the Smooth value slightly.
To soften the transition between selected and unselected pixels, raise the Feather value.
To heighten the contrast between pixels within the refinement area to remove noise from a high Radius value and produce a crisper selection edge, increase the Contrast value.
To shrink the selection edge inward (to eliminate background pixels) or expand it outward from the edge, adjust the Shift Edge value slightly.
- In the Output area:
If you want to replace background pixels along the edges of the selection with colors from within the selection, check Decontaminate Colors, then raise the Amount value.
Choose Output To: Selection to refine the selection without putting its contents on a new layer. Or to copy the selection contents to a new layer, choose New Layer (no mask) or New Layer with Layer Mask (the shape of the selection appears in a layer mask). If Decontaminate Colors is checked, only new layer options will be available.
- Optional: Check Remember Settings to have the current settings become the new default values for the dialog.
- Click OK.
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