Portrait en Clair-Obscur d'une Marchande d'Art

{
  "core_style": "cinematic portrait, medium-format photography",
  "target_quality": "medium-format photorealism, sharp focus, rich tonal depth",
  "main_rule": "face matched strictly to the reference photo with no unnatural smoothing",
  "shot_setup": {
    "camera": "Phase One IQ4 150MP with Rodenstock 90mm HR lens",
    "angle": "eye level, centered",
    "framing": "tight head-and-shoulders, 4:5 aspect ratio, balanced negative space",
    "perspective": "natural flat perspective"
  },
  "subject": {
    "age": "[27–32]",
    "persona": "[art dealer in an art gallery loft at pre-dawn, calm yet intense]",
    "pose": {
      "action": "leaning back against a raw concrete wall",
      "head": "chin tilted slightly upward, gazing directly into camera lens",
      "mouth": "subtle knowing smirk, lips closed",
      "shoulders": "relaxed and square, one blazer sleeve pushed up to the elbow",
      "hands": "holding a half-smoked joint between two fingers, other hand resting on hip"
    },
    "hair": "[shoulder-length textured black wavy hair, slightly tousled, a stray lock across cheekbone]",
    "outfit": "[tailored charcoal blazer worn open over a black silk bralette, high-waisted black leather trousers]",
    "makeup": "subtle natural makeup, defined brows, light mascara, faint dewy highlight on cheekbones"
  },
  "accessories": [
    "[thin platinum choker necklace]",
    "[oversized vintage gold watch on wrist]"
  ],
  "environment": {
    "location": "[contemporary art gallery private viewing room, pre-dawn]",
    "background": "large abstract canvas in crimson and black, concrete wall with sharp diagonal shadow",
    "time": "early morning twilight leaking through a frosted skylight"
  },
  "lighting": {
    "key": "hard directional 5600K spotlight from high left, sculpting cheekbones and jawline",
    "fill": "cool steel-blue ambient light from above",
    "effect": "chiaroscuro contrast across the face, distinct specular highlights on leather and silk"
  },
  "render_details": {
    "skin": "authentic skin texture, visible pores, natural micro-details",
    "fabric": "matte leather texture and lustrous silk reflection",
    "eyes": "dual catchlights showing warm tungsten point and cool ambient skylight"
  }
}