# GPT Image Hub prompt

## 暗調天體投影藝術人像
- URL: https://www.gptimagehub.com/zh-TW/library/low-key-celestial-projection-portrait
- Generator URL: https://www.gptimagehub.com/zh-TW/generate?promptId=oss-ym-mm-9717
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fzh-TW%2Flibrary%2Flow-key-celestial-projection-portrait
- Category: 人像與攝影
- Model: gpt-image-2-5-sunburst
- Aspect ratio: 4:5
- Style: photorealistic
- Tags: 肖像攝影, 投影映射, 暗調, 電影質感, 土星, 棚拍打光
- Updated: 2026-10-28T04:17:28.098Z
- Created: 2026-10-28T04:17:28.098Z

腦後投影行星光環的暗調女性人像攝影。可自訂投影的天體類型、人物特徵或色彩基調以探索不同光學光影效果。

### Full prompt
```text
{
  "generation_request": {
    "meta_data": {
      "task_type": "low_key_projection_mapping_portrait",
      "language": "zh"
    },
    "output": {
      "aspect_ratio": "4:5",
      "resolution": "high"
    },
    "scene": {
      "concept": "以投影對映為主要光源的暗調情緒人像攝影",
      "environment": "純黑無縫背景，無可見房間細節，無道具",
      "composition": "四分之三側面半身人像，主體在畫面中稍偏下方，上方留白，發光星球如光環般位於腦後"
    },
    "subject": {
      "person": "[成年女性]",
      "wardrobe": {
        "top": "深色極簡上衣，非反光啞光面料"
      },
      "hair_makeup": {
        "hair": "自然散落的長髮，真實質感",
        "makeup": "極簡裸妝，保留皮膚毛孔與真實質感"
      },
      "pose": "頭部微傾，一隻手輕觸耳畔，雙肩放鬆",
      "expression": "平靜、夢幻，帶有若有若無的恬淡微笑"
    },
    "projection": {
      "content": "發光的帶光環[土星]",
      "placement": "居中位於腦後，星環弧線向畫面邊緣延伸",
      "light_behavior": "彩虹折射光帶貼合在臉部與手臂上，自然柔和地過渡至陰影",
      "notes": "光線自然包裹面部立體輪廓，避免扁平貼圖感"
    },
    "camera": {
      "shot": "投影光影人像",
      "lens_mm": 50,
      "aperture": "f/2.0",
      "focus": "眼睛和嘴唇清晰銳利，髮絲柔和虛化",
      "quality_tags": "逼真攝影、電影質感、細膩膠片顆粒"
    },
    "lighting": {
      "style": "投影儀為主光源，輔以極微弱的環境補光",
      "notes": "深邃純黑、高對比度、背景無雜散光溢位、眼中具柔和眼神光"
    },
    "color_grade": {
      "palette": "深黑底色，高飽和度青色、洋紅與綠色的光譜彩虹帶，冷冽的星球深藍",
      "contrast": "高動態對比度，高光細節受控",
      "effects": "細膩顆粒，最亮投影邊緣伴有輕微光暈效果"
    }
  }
}
```