提示词 prompt：如下：

```json
{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "street_photography_decisive_moment",
      "language": "zh-Hans",
      "priority": "highest",
      "version": "v1.0_DECISIVE_MOMENT_GEOMETRY_NO_CROP"
    },
    "scene": {
      "location": "繁忙的城市街角",
      "time_of_day": "白天",
      "environment": "仅自然光，无人工照明",
      "activity": "行人穿过几何感强的背景",
      "moment_description": "一名行人进入画面，恰好处于运动的最高点，与建筑线条完美对齐"
    },
    "camera_logic": {
      "lens": "50mm 定焦镜头",
      "aperture": "f/8",
      "shutter_speed": "1/250",
      "iso": "自动",
      "focus_mode": "手动区域对焦",
      "focus_distance": "约 3 米"
    },
    "composition_logic": {
      "approach": "预构图",
      "geometry_priority": "高",
      "human_subject_role": "次要于构图，但时机完美",
      "crop_policy": "不裁剪，画面必须在相机内完整呈现"
    },
    "timing_logic": {
      "capture_rule": "仅在人物运动的最高点捕捉",
      "burst_mode": "最少，最多 1-2 帧",
      "anticipation_based": true
    },
    "style": {
      "color": "黑白",
      "contrast": "中等",
      "tonality": "自然，胶片感",
      "mood": "宁静，精准，永恒"
    },
    "negative_prompt": "摆拍对象，人工照明，浅景深，剧烈模糊，过度后期处理，电影式夸张，裁剪，变焦镜头效果"
  }
}
```

来源：https://x.com/astronomerozge1/status/2018433422260044253