For Affinity Photo, add a histogram that pertains to only localized adjustments. For example, when I add a levels adjustment layer and paint that adjustment by unmasking an area after adding a black fill layer, I want to see a histogram of just the part of the photo I unmasked. A check box option to show only the local adjustment on the histogram would work as well.
If this already exists in Photo or if there is a work-around please let me know.
Thank you for considering this useful feature and the hard work that goes into Affinity Photo.
Michael
