Photography means working with light. If you work outside, you will use the available light, as a rule. I like to use available light even indoors, because flash and other artificial sources of light might pretty easily kill the feeling and mood. If you move about a cemetery, as I did here, you will find very different lightings at the same time, depending on bushes and trees shading more or less this or that scene. Here we have the full lighting of the undimmed evening sun, resulting in a maximum of contrast, which shows the importance of dark parts in any composition.