Dehaze
The Dehaze filter restores contrast, detail, and lost color to images. This tool is especially useful for images that have been captured through a haze. A haze can occur when dust, smoke, or other particles obscure the clarity of the image, particularly the sky.
To dehaze an image:
- Select Filter | Exposure / Lighting | Dehaze from the main menu, or press Ctrl + Alt + H.
- Drag the Amount slider to adjust the strength of the correction.
- Do one of the following:
- Click OK to accept your changes and close the panel.
- Click Cancel to discard your changes and close the panel.
Right-click a slider to reset to the default value.
This filter features a Pixel Targeting tab (see Pixel Targeting for more details). 
Use the Edit Brush to paint this effect onto specific areas of the image. 
Use the Gradient tool to transition this effect across specific areas of the image. 
Use the Radial Gradient tool to apply effects around, or directly to, a center point. 