Three elements to control depth of field

The three elements that control depth of field are "aperture, shutter speed, and ISO"

These three can affect exposure. Photography also has three elements of depth of field: "aperture, focal length, and shooting distance." These three Each can affect the depth of field.

Depth of field is the range of clear images in front and behind the focus position. The greater the depth of field (deeper), the greater the clear range in front and rear of the focus. A large depth of field can make the image clear both far and near. . The smaller (shallower) the depth of field, the smaller the clear range before and after the focus. A small depth of field can make the picture appear blurry and blurred, and only the focus picture is clear.

Depth of field size and aperture, Focal length, the distance between the subject and the background are closely related, and are called the three elements of depth of field.

Aperture is an important factor in controlling the depth of field (that is, the degree of blur of the background). When the focal length remains unchanged. In this case, the larger the aperture, the shallower the depth of field, and the more obvious the blur; the smaller the aperture, the deeper the depth of field, and the less obvious the blur.

When other conditions remain unchanged, the longer the focal length, the more obvious the blur. The shallower the depth of field of the captured image, the easier it is to achieve the blurred image effect; the shorter the focal length, the deeper the depth of field of the captured image, and the easier it is to achieve the clear and sharp effect of both the front and rear images. .