Assignment 3 - Depth of field

What is depth of field?

Depth of field is also known as depth of focus. When you focus on a person, for example, if the background and foreground are also sharp you have great depth of field. When the background and foreground are out of focus you have a shallow depth of field. By using a larger lens opening (lower number) you will have less depth of field. This can be a very pleasing effect because it draws attention to the subject of the picture instead of the background or other objects.