{
  "prompt": "A single 4x4 grid containing sixteen clean photographic portraits of the same individual, depicting their life from age 1 to age 151. The style must be a realistic, high-detail photographic study with steady, neutral lighting and a simple, neutral backdrop. The focus is strictly on the clear, progressive shift in age and physical detail across the life stages. MAINTAIN EXTREME CONSISTENCY in the individual's core facial structure, skin tone, and distinguishing general features across all 16 portraits for immediate recognition.",
  "grid_layout": {
    "rows": 4,
    "columns": 4
  },
  "portrait_sequence": [
    {
      "row": 1,
      "column": 1,
      "age": 1,
      "description": "Infant/Toddler (clear baby features, soft skin, minimal hair)"
    },
    {
      "row": 1,
      "column": 2,
      "age": 11,
      "description": "Child (pre-teen features, bright eyes, youthful expression)"
    },
    {
      "row": 1,
      "column": 3,
      "age": 21,
      "description": "Young Adult (peak features, smooth skin, clear definition)"
    },
    {
      "row": 1,
      "column": 4,
      "age": 31,
      "description": "Adult (slight maturing, defined features)"
    },
    {
      "row": 2,
      "column": 1,
      "age": 41,
      "description": "Middle-Aged Adult (early signs of lines around eyes/mouth, robust look)"
    },
    {
      "row": 2,
      "column": 2,
      "age": 51,
      "description": "Mature Adult (more pronounced lines, subtle change in facial volume)"
    },
    {
      "row": 2,
      "column": 3,
      "age": 61,
      "description": "Senior (grey or white hair begins to dominate, visible lines, kind expression)"
    },
    {
      "row": 2,
      "column": 4,
      "age": 71,
      "description": "Elderly (significant lines, thinner skin, deep-set eyes)"
    },
    {
      "row": 3,
      "column": 1,
      "age": 81,
      "description": "Very Elderly (sagging skin, numerous wrinkles, frail but clear-eyed)"
    },
    {
      "row": 3,
      "column": 2,
      "age": 91,
      "description": "Nonagenarian (thinning hair, distinct bone structure visible, deep character lines)"
    },
    {
      "row": 3,
      "column": 3,
      "age": 101,
      "description": "Centenarian (extreme aged features, very delicate appearance, peaceful expression)"
    },
    {
      "row": 3,
      "column": 4,
      "age": 111,
      "description": "Supercentenarian (advanced signs of aging, very gentle features)"
    },
    {
      "row": 4,
      "column": 1,
      "age": 121,
      "description": "Extreme Old Age (maximum visual effects of long lifespan, unique textures)"
    },
    {
      "row": 4,
      "column": 2,
      "age": 131,
      "description": "Hyper-Aged Study (hypothetical extreme age, focus on skin texture and feature endurance)"
    },
    {
      "row": 4,
      "column": 3,
      "age": 141,
      "description": "Final Stage Study (maximum artistic representation of very long life)"
    },
    {
      "row": 4,
      "column": 4,
      "age": 151,
      "description": "Ultimate Extreme Age Portrait (focus on preserving core identity despite time's passage)"
    }
  ],
  "visual_constraints": {
    "clothing": "Simple, non-distracting garment (e.g., solid gray t-shirt or simple black shawl) across all squares to avoid period-specific details.",
    "background": "Neutral, light gray or off-white backdrop.",
    "lighting": "Studio lighting, uniform, no harsh shadows.",
    "expression": "Natural, calm, direct gaze.",
    "style": "Hyper-realistic photography, high-resolution detail."
  }
}