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Richard Liu

AP Soft Proof Adjustment Layer & Out-of-Gamut Areas

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I have the latest version of Affinity Photo running on a MacBook Pro 17" under macOS 10.12.6.  When I use a Soft Proof adjustment layer to soft proof my edited photo before printing, I check the box to show the out-of-gamut areas.  The tutorial leads me to believe they should be grey, but they seem to be black on my setup, and, depending on the photo, it takes a lot of playing around with the Curves adjustment to get rid of most of them.

Is there a special meaning to black areas, as opposed to grey?  While I'm at it:  Where can I read up on curves, gamut, etc.?  I've never used such a photo editing program before, not even Lightroom or Photoshop.


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Hi Richard Liu,

Welcome to the forums :)

Please could you go to Document > Colour Format and try setting to 16/8bit RGB to see if that makes your gamut show as grey? You can find informative links for curves and gamuts etc below!


https://affinity.help/photo/English.lproj/index.html?page=/Clr/ClrProfiles.html?title=Colour management 


https://affinity.help/photo/English.lproj/index.html?page=/Adjustments/adjustment_softProof.html?title=Soft Proof adjustment


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