cAMERA/LENS TECHNIQUE - DEEP DEPTH OF FIELD

Depth of field (DOF) refers to how much of a photo is sharp in front and back of where you focus on the main subject. DOF is primarily controlled by aperture size though other factors come into play such as the focal length of the lens and the distance the background is from the subject.In some cases, it may be desirable to have the entire image sharp, and a large DOF is appropriate which means that all or most of the picture is in focus from front to back. It is often used for capturing subjects in the distance, such as in landscape scenes.

The further away your camera is from the subject, the greater the depth of field. Higher f-stop number is used to produce deep depth of field.