Maske

When you apply the Maske zeichnen (B), Lineare Verlaufsmaske zeichnen (L), Radiale Verlausfsmaske zeichnen (T), Reparaturmaske zeichnen (Q), or Klonmaske zeichnen (S) to an image, the Ebenen tool automatically creates a mask along with an adjustment layer. You can then make your localized image adjustments.

If you have created an empty layer first, you apply the desired image adjustments and see them being applied as you draw the mask.