Hyper-realistic black-and-white chiaroscuro portrait prompt

Create a hyper-realistic 8K cinematic black-and-white portrait of the uploaded person in a dramatic chiaroscuro style. The subject is seated at a three-quarter angle, leaning slightly forward with a relaxed yet commanding posture. His face is turned slightly away from the camera,not looking at the lens, with one side of the face sharply illuminated and the opposite side fading into deep, velvety black shadow.  His expression is contemplative. His hands are near the chest in a natural, precise pose, with the…