Low-Key Celestial Projection Portrait

{
  "generation_request": {
    "meta_data": {
      "task_type": "low_key_projection_mapping_portrait",
      "language": "en"
    },
    "output": {
      "aspect_ratio": "4:5",
      "resolution": "high"
    },
    "scene": {
      "concept": "moody low-key portrait using projection mapping as the primary light source",
      "environment": "pure seamless black background, no visible room details, no props",
      "composition": "three-quarter portrait, subject positioned slightly low in frame with negative space above, luminous planet positioned directly behind head like a glowing halo"
    },
    "subject": {
      "person": "[adult woman]",
      "wardrobe": {
        "top": "dark minimal top, matte non-reflective fabric"
      },
      "hair_makeup": {
        "hair": "long hair down, natural texture",
        "makeup": "minimal, photorealistic skin texture with visible pores"
      },
      "pose": "head slightly tilted, one hand near ear, relaxed shoulders",
      "expression": "calm, dreamy, subtle serene smile"
    },
    "projection": {
      "content": "glowing [Saturn] with rings",
      "placement": "centered behind head with ring arc extending across the frame",
      "light_behavior": "prismatic rainbow refraction bands contouring across face and arm, soft organic falloff into deep shadows",
      "notes": "believable optical projection wrapping around facial volume, avoid flat sticker appearance"
    },
    "camera": {
      "shot": "projection-mapped portrait",
      "lens_mm": 50,
      "aperture": "f/2.0",
      "focus": "sharp focus on eyes and lips, gentle falloff on hair",
      "quality_tags": "photorealistic, cinematic, subtle film grain"
    },
    "lighting": {
      "style": "optical projector as key light with faint ambient fill",
      "notes": "deep blacks, high contrast, zero background light spill, delicate eye catchlights"
    },
    "color_grade": {
      "palette": "deep blacks, saturated cyan, magenta, and green rainbow spectral bands, cool celestial blues",
      "contrast": "high contrast with preserved highlight details",
      "effects": "fine film grain, subtle optical halation around brightest projection edges"
    }
  }
}