# GPT Image Hub prompt

## 夜景城市閃光燈人像
- URL: https://www.gptimagehub.com/zh-TW/library/night-city-flash-portrait
- Generator URL: https://www.gptimagehub.com/zh-TW/generate?promptId=oss-ym-mm-12593
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fzh-TW%2Flibrary%2Fnight-city-flash-portrait
- Category: 人像與攝影
- Model: nanobananapro
- Aspect ratio: 4:5
- Style: photorealistic
- Tags: 閃光燈攝影, 夜景人像, 城市燈光, 風格人像, 高對比度, 精品手錶, 置中構圖
- Updated: 2026-10-26T16:50:08.098Z
- Created: 2026-10-26T16:50:08.098Z

生成以直打閃光燈補光、璀璨城市夜景為背景的高對比度夜間人像。可自由修改色碼、服裝搭配或遠景景觀以客製化效果。

### Full prompt
```text
{
  "metadata": {
    "image_type": "攝影照片",
    "primary_purpose": "人像/生活方式"
  },
  "composition": {
    "rule_applied": "中心構圖",
    "aspect_ratio": "4:5",
    "layout": "前景單一主體配合遼闊深遠背景",
    "focal_points": [
      "主體明亮的面部與筆挺白襯衫",
      "佩戴名錶交疊的雙手",
      "背景中閃爍連綿的城市燈火"
    ],
    "visual_hierarchy": "視線始於微笑的面龐，沿開領白襯衫向下至交疊的雙手與手錶，隨後延伸至橫向延展的城市夜景與遠山輪廓",
    "balance": "對稱的主體擺位與略帶不對稱的背景景觀形成對比"
  },
  "color_profile": {
    "dominant_colors": [
      {"color": "深黑/藏青", "hex": "#0D1117", "percentage": "55%", "role": "夜空背景與西裝外套"},
      {"color": "純白", "hex": "#FFFFFF", "percentage": "15%", "role": "主體襯衫"},
      {"color": "暖調膚色", "hex": "#C68767", "percentage": "15%", "role": "主體面部與雙手"},
      {"color": "金黃", "hex": "#F4C430", "percentage": "10%", "role": "城市點狀夜景燈光"}
    ],
    "color_palette": "冷調深藍黑陰影與暖金色燈光構成的互補色調",
    "temperature": "暖色前景與冷暗背景形成對比",
    "saturation": "中度飽和（膚色與燈光鮮豔，陰影深度去飽和）",
    "contrast": "高對比度"
  },
  "lighting": {
    "type": "前景主體機頂硬閃光與背景環境光源混合",
    "source_count": "前景單一主導正面閃光，背景無數微小環境點光源",
    "direction": "正前方略偏上方",
    "quality": "硬光，在下巴、衣領和手部下方形成利落陰影",
    "intensity": "主體明亮，背景整體暗調（低調攝影）",
    "contrast_ratio": "高對比度，產生戲劇性的主體分離感",
    "shadows": {
      "type": "輪廓清晰的硬邊陰影",
      "density": "深黑色",
      "placement": "下巴下方、襯衫領後、雙手下方、駁頭下方"
    },
    "highlights": {
      "treatment": "鏡面高光",
      "placement": "鼻尖、額頭、髮絲質感與錶盤表面"
    }
  },
  "technical_specs": {
    "medium": "數碼攝影",
    "style": "寫實生活方式人像",
    "texture": "光澤感發絲與腕錶對比平滑織物與皮膚",
    "sharpness": "主體極度清晰銳利",
    "grain": "深邃夜空背景帶有些微數碼噪點",
    "depth_of_field": "中景深（主體銳利，遠處城市輪廓清晰可辨）",
    "perspective": "平視視線視角"
  }
}
```