Depth

   Photography is a two-dimensional medium. Because of this we have to choose our composition carefully in order to convey the sense of depth that was present in the actual scene. You can create depth in a photo by including objects in the foreground, middle ground and background. Another useful composition technique is overlapping, where you deliberately partially obscure one object with another. The human eye naturally recognises these layers and mentally separates them out, creating an image with more depth.

   Depth of Field is the amount of distance between the nearest and farthest objects that appear in acceptably sharp focus in a photograph. It is the sharp area surrounding the point of focus. The magnitude of the sharp area is affected by several factors: distance between the camera and the subject, focal length and aperture.

• The closer the subject to the camera, the more shallow the depth of field.
• The longer the focal length, the more shallow the depth of field.
• The larger the aperture (smaller the F-number), the more shallow the depth of field.

An Example of an image with Depth: