When it comes to taking artistic photographs, you will find that the use of silhouettes is something that is quite in a class of its own. Digital photography allows you to take impressively beautiful silhouette pictures quite easily, but doing so well requires a little bit of work. Some people choose to take pictures with the right contrast and then to go in with a photo editing program, but it is also possible to get great silhouettes from the very beginning.
Remember that a silhouette is an image that has much fewer distinguishing features than a regular photograph. While just about anything can be turned into a silhouette, you will find that you get much better results when you are looking at something that has both clear and recognizable edges. There are many iconic pictures of animals walking across a sunset. These animals, giraffes, rhinoceroses, and elephants, are very distinct, making this a spectacular shot. If the edges of your subject are indistinct, choose a different technique.