What are the factors that affect the depth of field and their laws?

Three factors:

1. hole

2. Focal length

3. Shooting distance

Law:

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

2. The longer the focal length, the smaller the depth of field; The shorter the focal length, the greater the depth of field.

3. The closer the shooting distance, the smaller the depth of field; The farther the shooting distance, the greater the depth of field.