Rembrandt lighting. A 50-year-old Japanese male ceramic artist with salt-and-pepper hair, wearing an indigo work jacket, holding a small handmade celadon bowl at chest level, intimate waist-up portrait in a dark pottery workshop, clay dust on his sleeves, calm direct gaze, one elevated side key light, triangular patch on the shadow-side cheek, earthy photographic colors. No text, no watermark.