Best way? Go gradually from 100 to 36% opacity

[Ofnuts]

(11-09-2023, 02:13 PM)T-buch Wrote: Yes the "feathered" selection somehow got the effect I want. The problem is, it is becomes very voluminous to check, - to find out where the opacity starts and where it ends

Use the Pointer dialog and explore the image with the mouse (IRL I keep the Pointer dialog docked in my controls window, because I use it all the time). Keep Sample merged unchecked if you want the opacity of the current layer.