What kind of photos are taken with large aperture and small depth of field?

Controlling the depth of field is not entirely dependent on the aperture. As far as controlling the aperture size is concerned, if you want to get a large depth of field, try to use a small aperture; If you want a small depth of field, try to use a large aperture. ? In addition to adjusting the aperture size, the depth of field can be controlled, as well as the length of the lens focal length and the shooting distance. The longer the focal length of the lens, the smaller the depth of field; The shorter the focal length of the lens, the longer the depth of field. The closer the shooting distance is to the subject, the smaller the depth of field, and the farther the shooting distance is from the subject, the greater the depth of field. As shown in the figure below, the top is a large aperture and a small depth of field, and the bottom is a small aperture and a large depth of field.