Traditional Culture Encyclopedia - Photography and portraiture - How to get a shallow depth of field (blurred background, prominent theme ...) when shooting close-ups (such as portraits and flowers)?

How to get a shallow depth of field (blurred background, prominent theme ...) when shooting close-ups (such as portraits and flowers)?

The larger the aperture (the smaller the numerical value), the smaller the depth of field (shallow depth of field, that is, the range of clear imaging), the longer the focal length, the farther the distance between the subject and the background, and the closer the camera and the subject, the smaller the depth of field.