By exposing for the areas directly in contact with the sun, the background and surrounding shadows will dramatically darken, drawing focus and light to your subjects.
It is not uncommon for photographers to avoid shooting in the sun and run for the open shade for an easier and even exposure. We covered back-lighting earlier as a solution for shooting in harsh sun-lit situations. But sunlight can also be used as a direct spotlight on your subject. By exposing for the areas directly in contact with the sun, the background and surrounding shadows will dramatically darken, drawing focus and light to your subjects. Applying this technique to different lighting situations will create varying visual effects.