Nano Banana Pro on Gemini App.

Prompt;

{
  "render_goal": "Create a photorealistic party scene portrait with shallow depth of field and full focus on the subject",
  
  "subject": {
    "identity": "Man identical to the reference image",
    "face_match": "exact",
    "expression": "relaxed, confident, subtle smile",
    "attitude": "calm, effortless, socially comfortable"
  },

  "wardrobe": {
    "style": "casual party wear",
    "outfit": "well-fitted t-shirt or casual shirt with relaxed trousers",
    "look": "clean, modern, understated"
  },

  "scene": {
    "environment": "indoor party or lounge setting",
    "background_people": "multiple men and women socializing",
    "background_focus": "strong blur, soft bokeh, no facial detail visible",
    "vibe": "lively but intimate"
  },

  "lighting": {
    "type": "minimal, cinematic lighting",
    "key_light": "soft focused light on subject’s face and upper body",
    "ambient_light": "dim party lights in background",
    "contrast": "subject clearly separated from background"
  },

  "camera": {
    "shot_type": "medium portrait",
    "lens": "85mm",
    "aperture": "f/1.8",
    "depth_of_field": "very shallow",
    "focus": "tack-sharp on subject only"
  },

  "style": {
    "realism": "ultra-photorealistic",
    "finish": "natural skin texture, cinematic color grading",
    "restrictions": ["no illustration", "no 3D", "no cartoon"]
  }
}