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Until recently I've used mainly Nikon Capture NX2 and DxO for RAW processing - both have 'colour control point' tech to select areas for adjustments. I'm now learning AP (v126.96.36.199), and right now trying to get the hang of the overlay and selection methods - but I'm getting the white edges shown in the attached screenshots. The original is a RAW (.NEF) image selected purely as a sample for testing. In the first instance I used Develop Persona and the Overlay Paint tool to select the sky with edge aware. When I painted in the overlay exposure adjustment I got a white edge on the overlay and was unable to find a way to remove it. (Ignore the blotchy uneveness of the paint tool - that's another matter which I'll address separately!) In the second I used Photo Persona and followed one of the AP video tutorials to create an alpha channel selection (with refine) which I then applied to a Brightness and Contrast adjustment layer (for the land) and inverted to a Curves adjustment layer (for the sky). The nearest I've come to fixing this one is by editing the (land) layer blend options - this seems to work up to a point but still doesn't quite eliminate all of the edge. Is there a way to avoid creating the white edge in the first place (particularly for the Overlay Paint tool which I'd use a lot), or a better way to remove it than layers and blend options? TIA