Using curves and levels.
This means to use brightness and contrast in a more advanced way than before,
While the brightness and contract function is something you apply to the overall image when you work with curves and levels then you can fine tune these upper mentioned functions and apply them only on a part of an image:
- Click on Menu
- Choose „Adjustments” for adjusting the layers
- This will give you tons of options to work on an image
- The curve levels will give you the chance to choose a section of the image to work with
- Experiment with this tool before committing yourself to any change within an image.