Notice the beautiful window light, and the mirroring of his profile by the globe.
When you click to view the larger image, please also note how sharp his eye (the point of focus) appears, even wide open @ f/1.4. Everything else fades softly out of focus.
Those two qualities — biting sharpness and delicate out-of-focus rendering — are both courtesy of the Leica 75mm Summilux lens.
(please click on the image to view)
↑Leica M9 and Leica 75mm Summilux @ f/1.4.