決定性瞬間黑白街頭攝影

{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "street_photography_decisive_moment",
      "language": "zh",
      "priority": "highest",
      "version": "v1.0_DECISIVE_MOMENT_GEOMETRY_NO_CROP"
    },
    "scene": {
      "location": "[繁華的城市街角]",
      "time_of_day": "[白天]",
      "environment": "僅自然光，無人工照明",
      "activity": "[行人在具有強烈幾何感的建築背景前穿行]",
      "moment_description": "[單一行人在步態運動最高峰踏入畫面，與建築線條完美呼應]"
    },
    "camera_logic": {
      "lens": "[50mm定焦鏡頭]",
      "aperture": "[f/8]",
      "shutter_speed": "[1/250秒]",
      "iso": "自動",
      "focus_mode": "手動超焦距對焦",
      "focus_distance": "約3米"
    },
    "composition_logic": {
      "approach": "預先構圖",
      "geometry_priority": "高",
      "human_subject_role": "服從於幾何構圖但抓拍時機精準",
      "crop_policy": "無二次裁切，相機內完成完整構圖"
    },
    "timing_logic": {
      "capture_rule": "精準抓拍人類行走姿態的高峰瞬間",
      "anticipation_based": true
    },
    "style": {
      "color": "黑白",
      "contrast": "中等",
      "tonality": "自然，膠片質感",
      "mood": "寧靜、精確、恆久"
    },
    "negative_prompt": "擺拍人物，人工光源，淺景深，運動模糊，重度後期，電影化誇張，裁切"
  }
}