Toning Tool - (O)

They are from left to right respectfully:

• Dodge to lighten an area of the picture,
  
• Burn to darken an area of the picture,
  
• Sponge to change the color saturation of an area of the picture
  

The Dodge and Burn tools are based on traditional photographer techniques of controlling the amount of light that is used during developing the film. Less light is used to create a lighter image (dodge) and more light is used to over-develop or darken a picture (burn).

In the below example a (really huge) brush was used to apply the tool to each of their respective tiles in the picture. The tiles on the top were selected and the specific tool was applied two times. The tiles on the bottom were selected and the respective tools were applied several times to show their exaggerated effect (since subtle changes are often hard to determine.)

Each of the toning tools has options available in the Options window. When you are working with the Dodge and Burn tools - you can have the setting in the option window to work with the Shadows, Midtones, or Highlights. The Exposure can be set from anywhere to 0% to 100% to minimize and maximize the effect on the picture. When you are working with the Sponge tool - you can have it set to De-saturate or Saturate. For the sponge tool - the exposure setting has been replaced with the Pressure setting. This lets you set the amount of effect that the sponge will have on the picture. Most of the time you will probably select an area of the photograph and use a smaller brush than was used in the example. Using these tools you can touch up the areas of a picture that were either over or under exposed or areas where the color saturation doesn't quite match the rest of the picture. It takes some practice to get a handle on what's happening but it can be very helpful in fixing imperfections in pictures.