Region Selection & Masking
The Region & Mask tools allow you to easily select (or mask) regions of a photo.
This is the original image. The right side of her face is too dark
So I simply paint the area I want to modify with the Region Painter tool
Then adjust the brightness of this region. It has a very obvious hard edge
By applying a feather and a graduated blend the final result is a seamless enhance of just a selected area of the photo.
Click any picture to enlarge