Curves tools can be really useful for your editing process, giving you greater speed and control over exposure, contrast and even colour, over the dynamic tonal range of your image. Adobe Camera RAW adjustments can make up the backbone of your photography post production, learn the basics in this tutorial. I have made a few basic adjustments like dropping the highlights to bring back some of the blue sky, brightening the shadows and adding a little contrast and texture.
Parametric CurveParametric Curve splits your tones into sections: highlights, lights, darks and shadows, and you will see you have sliders that you can adjust that reflect those. If I exaggerate that 'S' (below) you can see the image would be very high in contrast, to the point where tones at both ends of the graph are….