Depth of field (DOF) is the distance in front and beyond the object that is in focus. This tutorial will teach you about how to use Depth of Field in your own photography.
A short depth of field can be very useful when you want to isolate your object from the background, such as when taking portraits or macro photography. A large depth of field is great when you photograph landscapes and overall when you want every detail to be in focus.
There are three variables that affect DOF, the size of the Aperture, the distance to the object and what lens you’re using. (There is a fourth thing that affects the DOF, but that’s the size of the sensor and unless you have two cameras with different sensor sizes this isn’t something to take into account.)
