I'm stuggling to come to grips with how one can use these masks.
I have a particular problem that would, on the surface, appear to be an ideal candidate...child shot in bright sun, with quite shadows on the face.
Having read what I can find and watched on-line video tutorials, my understanding is that I should be able to define a parametric or drawn mask (say a circle or similar) located on the child's face and then use the 'shadows and highlights' module to make adjustments only within the mask region.
Blowed if I can get any sensible results.
I guess the best answer is don't take shots like that
If you know how this business is supposed to work, or know of a particularly good tutorial on this, please let me know.