Using Curves to Add Contrast
The Curves tool is similar to levels, but it gives you more power to control shadows, highlights, and mid tones separately. Because it's a more advanced tool, you'll need to be careful when using it to adjust your images.
Basically you can use it to add some contrast to a photograph. See the tutorial below to get you started.
Basically you can use it to add some contrast to a photograph. See the tutorial below to get you started.