Lens: Shallow Focus

Shallow focus is a photographic and cinematographic technique incorporating a small depth of field. In shallow focus one plane of the image is in focus while the rest is out of focus. Shallow focus is typically used to emphasize one part of the image over another. Photographers sometimes refer to the aesthetic character of the area that is out of focus as bokeh.

In this Image the man in the background is in focus and the man in the foreground is blurred, this is really interesting because this is also a low angle shot and slightly a dutch angle. I can see that the foreground actor is the inferior object  and the background is the superior character, i think that the background character is no blurred so that the facial expressions are really stressed