Depth of field is the amount of distance between the nearest and farthest objects that appear in acceptably sharp focus in a photograph.
A large depth of field means that you will have a large area both in front or behind your main subject will appear sharp. If you have a shallow depth of field implies that anything other than your main focused point will appear out of forces. If you use a small f-stop (F5.6) it will create a shallow depth of field. However if you use a larger f-stop (F22) it will create a greater depth of field.
Here is my depth of field.
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F22 |
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F11 |
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F5.6 |