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refine selection / output new layer with mask

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hello, i am wondering about the result of the refine selection panel and the output ›new layer with mask‹. i attached some screenshots:

1: orginal image
2: result (new layer with mask – that works wonderfully)
3: new layer, mask not showing
> why does the duplicate of the orignal image get this black colouring ? i don’t understand why this happens, is it just the way it works ?

thanks a lot for further information,




Edited by nicolefally

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Hi @nicolefally, welcome to the forum.

What you are seeing is called 'colour decontamination'.

It is mentioned in the help here... https://affinity.help/photo/English.lproj/pages/Selections/selections_refine.html


Selection and Mask 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. 

If you want a mask without colour decontamination, then duplicate the layer, then refine > mask.

Hope this helps!

Win10 Home x64   |   AMD Ryzen 7 2700X @ 3.7GHz   |   16 GB RAM   |   1TB SSD   |   nVidia GTX 1660   |   Huion 1060 Plus

How I make GIFs >>> ScreenToGIF (Windows only, Open Source, Portable, ~600kB)

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