Butterfly-light black-and-white studio portrait template

{
  "style_prompt_template": {
    "subject": "{{PERSON_NAME_OR_IMAGE}}",
    "aspect_ratio": "9:16 竖屏",
    "canvas_size_guidance": "1080x1920 or equivalent 9:16 dimensions",
    "shot_type": "Medium-shot portrait framing, reduced from a close-up by 50%, showing the head through the middle of the torso, facing the camera",
    "photography_style": "Dramatic black-and-white studio portrait, editorial/art photography style",
    "composition": {
      "face_position": "The subject’s face is centered both horizontally and vertically in the frame",
      "face_size_in_frame": "The face occupies approximately 20-25% of the frame height; no tight crop, with ample negative space around the subject",
      "eye_line": "The eyes are positioned approximately on the vertical centerline of the canvas",
      "headroom": "Leave generous margin above the hair; clearly visible dark space above the top of the head",
      "crop": "Crop to the middle of the chest or the waist, showing more suit and shoulder detail with a wider view than a tight headshot",
      "surrounding_space": "Large areas of black negative space surround the subject on the left, right, top, and bottom",
      "alignment": "The subject faces the camera directly, with symmetrical composition and no off-center shift"
    },
    "lighting": {
      "type": "Single hard overhead light (butterfly lighting/Paramount lighting)",
      "quality": "Intense, narrow beam with pronounced falloff",
      "key_highlight": "Bright rim light catches the hair tips and forehead",
      "shadow_behavior": "Deep shadows beneath the brow ridge, cheekbones, and jawline; steep light-and-shadow gradation across the face",
      "background_light": "No background light; the background falls into near-total black, with a faint gradient near the upper edge and a spotlight cone visible in a wide aspect ratio"
    },
    "color_treatment": "Monochrome black and white, high contrast, deep blacks, without a flat gray midtone appearance",
    "background": "Pure black or near-black, slight vignette, no visible texture or props, large negative space",
    "wardrobe": "Dark tailored suit jacket, white dress shirt, dark tie, formal/business attire, full torso visible",
    "expression_and_pose": "Neutral to serious expression, calm and composed, minimal smile, direct eye contact, relaxed shoulders",
    "skin_and_texture_detail": "Visible natural skin texture, pores, and fine lines; preserve stubble if present, with an unretouched realistic quality",
    "hair_detail": "Individual hair strands clearly visible with sharp lighting, natural texture, not over-styled",
    "camera_and_lens": "Simulate a medium-format camera, 50mm-85mm equivalent lens, relatively distant working distance from the subject, shallow depth of field, sharp focus on the eyes",
    "grain_and_finish": "Fine film grain, high dynamic range, crisp micro-contrast, glossy editorial-grade finish",
    "mood": "Striking, powerful, cinematic, timeless"
  },
  "negative_prompt": "Color cast, flat lighting, soft focus, blown facial highlights, cluttered background, broad grin"
}

{
  "style_prompt_template": {
    "subject": "{{PERSON_NAME_OR_IMAGE}}",
    "aspect_ratio": "9:16 竖屏",
    "canvas_size_guidance": "1080x1920 或等效的 9:16 尺寸",
    "shot_type": "中景人像镜头，从特写缩小 50%，显示头部至躯干中部，面向相机",
    "photography_style": "戏剧性黑白影棚人像，编辑/美术摄影风格",
    "composition": {
      "face_position": "主体面部在画面水平和垂直方向均居中",
      "face_size_in_frame": "面部约占画面高度的 20-25%，非紧密裁剪，主体周围留有充足负空间",
      "eye_line": "眼睛大致位于画布垂直中心线",
      "headroom": "头发上方留有充裕边距，头顶上方可见清晰的深色空间",
      "crop": "裁剪至胸部中部或腰部，展示更多西装和肩部细节，比紧凑头像视野更宽",
      "surrounding_space": "主体左侧、右侧、顶部和底部周围有大面积黑色负空间",
      "alignment": "主体正对相机，对称构图，无偏心偏移"
    },
    "lighting": {
      "type": "单灯硬顶光（蝴蝶光/Paramount 布光）",
      "quality": "强烈、窄光束产生明显衰减",
      "key_highlight": "发梢和额头捕捉到明亮的轮廓光",
      "shadow_behavior": "眉骨、颧骨和下颌线下方有深阴影；面部呈现陡峭的明暗渐变",
      "background_light": "无背景光；背景陷入近乎全黑，顶部边缘附近有微弱渐变，宽画幅下可见聚光灯锥体"
    },
    "color_treatment": "单色黑白，高对比度，深邃黑色，无灰色中间调平坦感",
    "background": "纯黑或近黑色，轻微暗角，无可见纹理或道具，大面积负空间",
    "wardrobe": "深色定制西装外套，白色礼服衬衫，深色领带，正式/商务着装，完整躯干可见",
    "expression_and_pose": "中性至严肃表情，冷静沉着，极少微笑，直视镜头，肩膀放松",
    "skin_and_texture_detail": "可见自然皮肤纹理、毛孔、细纹、如有胡茬则保留，未经修饰的真实感",
    "hair_detail": "发丝清晰可见且光照锐利，自然质感，不过度造型",
    "camera_and_lens": "模拟中画幅相机拍摄，等效 50mm-85mm 镜头，与主体工作距离较远，浅景深，眼部焦点锐利",
    "grain_and_finish": "细腻胶片颗粒感，高动态范围，清晰微对比度，光泽编辑级质感",
    "mood": "强烈、有力、电影感、永恒"
  },
  "negative_prompt": "色偏，平光，柔焦，面部高光溢出，杂乱背景，咧嘴大笑"
}