Masks can quickly get confusing in ON1 Photo RAW. It’s not the tools themselves which are confusing, but the fact they can be used in three different places: Local adjustments: These are applied to the image as a whole in their own ‘Local’ panel. In other words, they are not associated with any specific layers […]
Local adjustments
Adjustments made only to specific areas in a photo, not the whole picture. You pick out the areas you want to adjust with selections, masks or brush tools.
DxO PhotoLab Graduated Filter, Control Points and Repair tool in action
This step-by-step editing walkthrough shows a number of DxO PhotoLab tools in action, principally the Local Adjustment tools, including the Graduated Filter and Control Point tools.