What is the use of depth of field?

Depth of field in photography is a very practical technique for photography, but some friends still don’t understand what the use of depth of field is? What is depth of field in photography? How to control depth of field in photography? Here I will introduce it to you, let’s do it together have a look.

What is the use of depth of field?

The control of depth of field can directly affect the prominence of the subject of the photo and the overall effect of the picture (sense of layering).

What is the depth of field in photography?

The distance from the closest point to the farthest point that produces a clearer image of the subject is the depth of field. It is also the depth of space at which the subject can be clearly imaged. The clarity of the scene image is not completely consistent within the depth of field range. The clarity at the focus is the highest, and the clarity of the remaining images decreases in proportion to its distance from the focus.

So it can be concluded (or simply put): the depth of field depends on the position of the focus.

How to control the depth of field?

Adjust the position of the focus, and the depth of field will naturally be adjusted accordingly. I believe everyone knows the factors that affect the focus position: aperture, focal length, and shooting distance (object distance).

The relationship between these three and depth of field is as follows:

1. The larger the aperture, the smaller the depth of field; the smaller the aperture, the larger the depth of field.

2. Long focal length, small depth of field; short focal length, large depth of field.

3. When the object is close, the depth of field is small; when the object is far away, the depth of field is large.

The above is my introduction to what is the depth of field in photography and how to control the depth of field. I hope it will be helpful to you.