Freezing the moments shall always be tricky in photography but, it also gives us an opportunity to get some amazing silhouettes. In order to capture the rapidly moving subjects, our camera needs to be in a faster shutter speed and this normally reduces the amount of light that enters the camera. If you find yourself in a such a situation where the moving subject is in the shadow region with a well-lit background (daylight preferably), you are in treat for some good silhouettes.
The above snap of mine may not be a perfect example of what I am talking about but know why it is not. Since the subject is very near to the light, it receives a considerable amount of light. It has a shiny surface as well which reflects the surrounding making it not a complete silhouette.
The faster shutter speed records the well-lit background easily and leaving your subject dark. The outcome looks beautiful in most cases. One situation you could try this technique – when you are at the gallery of a football match.
ISO 100 | f/8 | 1/125secs | 50mm