When you're working with a single point of interest in a photo, it's one of the most basic forms of composition available, so quite a common occurrence and it pays to know what to do with it. A single point can provide interest to an otherwise plain photo, and they're usually fairly small and contrasting to the rest of the photo.
A hearty welcome goes out to the readers of the Digital Photography School. I’d like to welcome you to The Digital Trekker. Within these pages you’ll find articles on travel photography… Depth of field