Brighten dark areas of a photo like a fill-flash. This effect burns bright areas and dodges dark areas to make photos look closer to what we naturally see with our own eyes.
The first step is to create a contrast mask. This is basically just a grayscale layer that'll define where the image needs dodging or burning.
Open a photo you would like to edit. Or, you may use the photo used in this tutorial (from iStockPhoto).

Duplicate the layer (Layer> Duplicate Layer or Ctrl+J) and change the blending mode of the new layer to Soft Light.

With the top layer selected, Invert (Image> Adjustments> Invert or Ctrl+I). You should immediately notice the details revealed.

The color seems to have desaturated a little bit. To fix this, simply desaturate the top layer (Image> Adjustments> Desaturate or Shift+Ctrl+U).
