Hyper-Detailed Structured Prompt for High-Fidelity Portrait Generation

A highly structured, JSON-based prompt designed for Gemini 3.0 Nano Banana Pro, focusing on generating a high-fidelity portrait. It specifies extreme detail levels (pore-level skin detail, absolute biological consistency), complex wardrobe physics (sheer knit with crystalline glitter), a specific pose (rotated head over shoulder), and detailed environmental and optical rendering settings (85mm prime lens, f/2.8 aperture, overcast lighting).

Prompt

{
  "document_header": {
    "schema_version": "4.0.0-UltraStructured",
    "generation_priority": "High-Fidelity Subject Retention",
    "canvas": {
      "aspect_ratio": "9:16",
      "orientation": "Vertical_Portrait"
    }
  },
  "core_identity_module": {
    "biometric_lock": {
      "source": "Reference_ID_001",
      "fidelity_rating": 1.0,
      "parameters": {
        "face": "100%_Preservation",
        "body_habitus": "100%_Preservation",
        "skin_topography": "Pore_Level_Detail",
        "biological_consistency": "Absolute"
      }
    },
    "anatomical_state": {
      "hair": {
        "pigment": "{argument name=\"hair pigment\" default=\"Blonde\"}",
        "styling": "Tight_Pulled_Back",
        "occlusion": "Zero_facial_obscuration"
      },
      "facial_logic": {
        "expression": "Poised",
        "eye_contact": "Direct_to_Lens",
        "head_rotation": "Posterior_to_Anterior_Over_Shoulder"
      }
    }
  },
  "kinematics_and_pose": {
    "skeletal_orientation": {
      "torso": "Facing_Away_180_degrees",
      "neck": "Rotated_toward_camera",
      "stance": "Static_Standing"
    },
    "spatial_anchor": {
      "coordinate_plane": "Outdoor_Porch_Balcony",
      "surface_interaction": "Weight_distributed_evenly"
    }
  },
  "material_science_wardrobe": {
    "primary_garment_top": {
      "classification": "Long_Sleeve_Crop_Top",
      "chroma": "{argument name=\"top color\" default=\"Tan_Light_Brown\"}",
      "textile_physics": {
        "weave": "Sheer_Knit",
        "transparency": "High_Subsurface_Scattering",
        "specular_map": "Sparkly_Crystalline_Glitter",
        "structural_integrity": "Soft_Drape"
      }
    },
    "secondary_garment_bottom": {
      "classification": "High_Waisted_Denim_Shorts",
      "chroma": "Matte_Black",
      "textile_physics": {
        "weave": "Heavy_Denim_Twill",
        "edge_finish": "Raw_Cutoff_Frayed",
        "specular_map": "Zero_Reflectivity"
      }
    }
  },
  "world_engine_environment": {
    "architecture": {
      "type": "Rustic_Balcony_Porch",
      "materials": ["Wood_Grain", "Textured_Railing"]
    },
    "biome_specification": {
      "flora": ["Tall_Pine_Trees", "Evergreen_Conifers"],
      "density_index": "Maximum_Foliage_Saturation",
      "color_profile": "Deep_Forest_Greens"
    },
    "atmospheric_system": {
      "sky_state": "Grey_Overcast",
      "cloud_cover": "100%",
      "weather_simulation": "Muted_Diffusion_No_Sunlight"
    }
  },
  "optical_render_pipeline": {
    "photographic_sim": {
      "lens_profile": "85mm_Prime_Portrait",
      "aperture": "f/2.8_Shallow_Depth",
      "iso": "100_Clean",
      "shutter_speed": "1/250_Freeze_Motion"
    },
    "lighting_model": {
      "primary": "Global_Diffused_Overcast",
      "secondary": "Subtle_Micro_Highlights_on_Knit_Sparkles",
      "shadow_type": "Ambient_Occlusion_Soft"
    }
  },
  "constraint_engine": {
    "negative_prompt_array": [
      "Face_Transformation",
      "Body_Morphing",
      "Direct_Sunlight",
      "Blue_Sky"
    ]
  }
}