Studio portrait of a Japanese male prosthodontist in his forties; light-medium skin, neutral-cool; neat textured black hair; dark eyes; white coat over charcoal scrub top, gloved hands holding a shade guide (generic); framing: head fully visible, slight headroom; neutral seamless; Rembrandt lighting; 105mm macro-sharp; photorealistic. Expression: precise calm. Negative: plastic skin, brand logos, forehead cut.