Hi,
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.
Thanks.