Which depth of field feature allows only a thin band in the scene to be rendered in sharp focus?

Shallow depth of field is a depth of field feature that enables only a narrow plane of a scene to be rendered in sharp focus, while the surrounding areas appear blurred. This technique is often used in photography and cinematography to isolate subjects from their background, directing the viewer's attention specifically to the subject. By using a wide aperture (a low f-stop number), the photographer or videographer can achieve this effect, resulting in a pleasing, soft background that enhances the overall composition.

In contrast, deep depth of field keeps a larger area of the scene in focus, which would not produce the same selective focus effect. Long exposure refers to the time the camera shutter is open, affecting motion blur and lighting, rather than depth of field. Wide aperture is a setting that contributes to achieving shallow depth of field but is not the feature itself defining the characteristic of having a thin band in sharp focus. Therefore, shallow depth of field correctly identifies the effect of limited focus on a specific segment within the broader scene.