What is Depth of Field

What does Depth of Field mean in Photography?

Depth of field refers to the distance between the nearest object (or potion of an object) that appears in focus and the farthest object (or portion of an object) that appears to be in focus. Depending on the distance from the lens, the focal length of the lens, and the aperture setting, the depth of field can be as little as a fraction of an inch, or as great as infinity.
 

What Factors effect depth of field, and how?

The closer the camera is to the subject, the less depth of field. The smaller the aperture (larger number), the greater the depth of field. The wider the lens (shorter focal length) the more depth of field you will get at any given distance from the subject. Also, smaller sensor sizes have greater depth of field, given the same focal length, aperture and camera to subject distance.
 

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