Olympus invited me to a photo event and workshop on the Teufelsberg. Teufelsberg is a hill (90m height) in Berlin Grunewald. On top of it there are the remains of a former US listening station that was closed after the the end of the cold war. Nowadays many artists use this place.
Photographers often like to speak about bokeh, the ability of a lens to render the out of focus area. Especially prime lenses with a fixed focal length and a wider maximum aperture are able to render a nice blurred background.