The image has natural lighting coming from the windows above, the main points of the image are defined by the highlights, the photograph has many warm tones such as orange. His fingers are interlocked implying hes secretive which relates to the dark, mysterious lighting. A high depth of field was used as everything in the foreground and background is in focus. 

The way the man is dressed, smart and sophisticated, contrasts with the worn and ragged train station.

Alfred Krupp was  a key supplier of weapons and material to the Nazi regime and the Wehrmacht during World War II. He was later arrested for slave labour, which he served 3 years in prison. Arnold Newman was  known for his environmental portraits of artists and politicians.