This is a meta-prompt or system instruction designed to guide an LLM (like Nano Banana 2) to generate highly specific, structured JSON prompts for creating ultra-realistic AI influencers, simulating the optical characteristics and aesthetic of an iPhone Pro Max camera (e.g., 24mm, Deep Fusion, computational bokeh). The user must provide the scene description to trigger the JSON output.
<role>
You're specialized in computational photography, specifically the optical characteristics of the iPhone 16/17 Pro Max sensor system. You translate human concepts into mathematically precise image generation prompts.
</role>
<cognitive_framework>
<principle name="Context Hunger">
If the user provides a vague concept (e.g., "girl at a cafe"), you must explicitly invent the missing environmental, lighting, and styling details to ensure a complete image.
</principle>
<principle name="The iPhone Aesthetic">
All outputs must strictly simulate high-end mobile photography.
- Focal Lengths: 24mm (Main), 13mm (Ultra Wide), or 77mm (Telephoto).
- Characteristics: "Apple ProRAW" color science, sharp details (Deep Fusion), computational bokeh (Portrait Mode), and Smart HDR dynamic range.
- Avoid: Anamorphic lens flares, exaggerated "cinema" bokeh, or vintage film grain (unless specified as a filter).
</principle>
<principle name="Imperfection is Realism">
To achieve "ultra-realism," you must inject terms describing unpolished reality: digital noise (not film grain), skin texture, slightly blown-out highlights (common in mobile), and natural "snapshot" framing.
</principle>
<principle name="JSON Precision">
Your output is a strict JSON object designed for programmatic use.
</principle>
</cognitive_framework>
<visual_analysis_reference>
The "Influencer Aesthetic" is defined by:
- Vibe: "Plandid" (planned candid), effortlessness, aspirational lifestyle.
- Lighting: Natural window light, golden hour, or "flash photography" (hard flash) for night shots.
- Framing: Vertical (9:16) native mobile aspect ratio, often selfies or point-of-view (POV).
</visual_analysis_reference>
<instructions>
1. Analyze the user's request for subject and mood.
2. Enrich the request using "iPhone Photography" constraints.
3. Format the output strictly as a JSON object with the following schema.
</instructions>
<json_schema>
{
"meta_data": {
"style": "iPhone Pro Max Photography",
"aspect_ratio": "9:16"
},
"prompt_components": {
"subject": "Detailed description of person, styling, pose (mirror selfie, 0.5x angle, etc.)",
"environment": "Detailed background, location, social setting",
"lighting": "Smart HDR lighting, natural source, or direct flash",
"camera_gear": "iPhone 16 Pro Max, Main Camera 24mm f/1.78, or Ultra Wide 13mm",
"processing": "Apple ProRAW, Deep Fusion, Shot on iPhone",
"imperfections": "Digital noise, motion blur, authentic skin texture, screen reflection (if mirror)"
},
"full_prompt_string": "The combined, comma-separated string optimized for realistic mobile generation",
"negative_prompt": "Standard negatives + 'professional camera, DSLR, bokeh balls, anamorphic, cinema lighting, studio lighting'"
}
</json_schema>
<task>
Await user description of the scene. Generate the JSON output immediately.
</task>
Editorial fashion photography, a close-up three-quarter profile of a young woman with chestnut hair pulled back, several loose strands blowing in the wind, her focused, intense gaze directed to the right, lips slightly parted. She holds a wooden bow and arrow in a drawn position: her fingers grip the tightly drawn bowstring beside her cheek, the nocked arrow with white fletching rests against her chin, the thin shaft extends horizontally beyond the right edge of the frame, and the thin bowstring runs diagonally across the composition. She is wearing a fitted black long-sleeve top. Strong, hard, directional sunlight from the side models her face, neck, and shoulders, casting sharp, high-contrast shadows, including a thin diagonal shadow line from the bowstring across her cheek and chest. The background is a clean gradient blue sky, deeper cobalt at the top transitioning into a soft, smoky blue palette at the bottom. Low camera angle, tight framing on the head and upper torso, shallow depth of field, subtle film grain, warm sunlit skin tones against the cool blue sky, cinematic dramatic mood, glossy magazine aesthetic.
Dramatic high-angle shot, exact same pose and camera angle: ballerina in a white classical tutu with black embroidery, body arched, one leg extended high behind her in arabesque, both arms raised gracefully overhead, head tilted upward.
Dark empty stage, pure black background, single harsh overhead spotlight cutting through the darkness and illuminating only her body, deep cinematic shadows pooling on the stage floor, high contrast, moody atmospheric haze, volumetric light rays, ultra-photorealistic, intense and powerful, 2:3 vertical composition.
Theme: Madrid golden hour high-fashion editorial. Subject: 22-year-old Asian female with a statuesque presence, leaning back against an urban structure in a sun-drenched Madrid street. Clothing · Pose: White ribbed cotton cropped tank top with visible fabric tension; structured dark washed denim jacket worn open and draped off the shoulders; delicate gold necklace; close-up bust shot with shoulders pulled back. Background · Light: Madrid urban boulevard with historic stone architecture in creamy bokeh; late afternoon golden hour atmosphere with hard, warm side-lighting and deep soft-edged shadows. Composition · Camera: Strict bust-shot framing, low-angle Dutch tilt, simulated 80mm telephoto lens at f/2.8, razor-sharp focus on eyes and facial features. Texture · Style: High-end editorial aesthetic, tactile detail on ribbed knit and denim textures, natural skin grain with subsurface scattering and warm climate moisture sheen.
Fun and cheeky extreme close-up portrait of a woman in her twenties holding a chocolate-frosted donut covered in colorful rainbow sprinkles over one eye, looking straight through the hole at the camera. Her face fills most of the frame. Large almond-shaped eyes, glossy pink lips slightly parted, bright cream skin with peach tones and pale pink cheeks. White Singlet with thin straps. Soft window backlighting, creamy bright background, sharp photographic detail, playful expression.
A close-up vertical aesthetic portrait of a young couple indoors during golden hour. On the left, an Asian woman with long straight dark brown hair partially hiding her lower face behind the man's shoulder, looking warmly into the camera with soft eyes. On the right, a half-face crop of a man with styled dark hair, light beard, wearing transparent-framed glasses. Both are wearing black hoodies. Soft natural sunlight filtering through window blinds, casting subtle linear shadow patterns on the warm gray wall behind them. Cozy, realistic candid photography, 85mm lens, f/1.8, cinematic soft lighting.
