高对比度夜间人像：闪光灯与城市灯光
一个高度详细的 JSON 格式提示，用于 Gemini Nano Banana Pro，旨在生成一张高对比度、精致的夜间生活方式肖像。该提示细致地定义了构图、色彩配置文件（互补的暖/冷色调）和光照（主体上的强闪光灯与背景中的城市环境光）。
nano-banana-pro · 产品营销 · 人像 / 自拍 · 城市风光 / 街道 · 摄影 · 电影 / 电影剧照 · 社交媒体帖子
中文提示词
```json { "metadata": { "image_type": "照片", "primary_purpose": "社交媒体/肖像/生活方式" }, "composition": { "rule_applied": "居中构图", "aspect_ratio": "4:5", "layout": "前景为单一主体，背景广阔深远", "focal_points": [ "主体明亮的面部和洁白的衬衫", "交握的双手展示着奢华手表", "背景中闪烁的城市灯带" ], "visual_hierarchy": "观者的目光从微笑的面部开始，沿着未扣扣子的白色衬衫形成的明亮 V 形向下移动到摆放的双手和手表，然后向外延伸到水平的闪烁城市灯带和山脉剪影。", "balance": "主体对称放置，与略微不对称的背景景观（右侧山脉）形成对比" }, "color_profile": { "dominant_colors": [ { "color": "深黑/海军蓝", "hex": "#0D1117", "percentage": "55%", "role": "背景夜空和西装外套" }, { "color": "纯白", "hex": "#FFFFFF", "percentage": "15%", "role": "主要主体衬衫" }, { "color": "暖肤色", "hex": "#C68767", "percentage": "15%", "role": "主要主体面部和双手" }, { "color": "金黄色", "hex": "#F4C430", "percentage": "10%", "role": "点缀城市灯光" } ], "color_palette": "互补色（暖金色/橙色灯光与冷深蓝/黑色阴影）", "temperature": "暖色前景与冷/中性深色背景", "saturation": "适中（肤色和灯光鲜艳，阴影深度去饱和）", "contrast": "高对比度" }, "lighting": { "type": "混合（主体上直接人工闪光，背景中环境实用灯光）", "source_count": "多个光源 - 前景单一主导闪光，背景数千个点状环境光", "direction": "前方/略微抬高", "directionality": "高度定向闪光", "quality": "硬光（在下巴、衣领和手下形成清晰的阴影）", "intensity": "主体明亮/整体低调", "contrast_ratio": "高对比度（戏剧性的前景隔离）", "mood": "活力/精致/迷人", "shadows": { "type": "清晰分明的边缘", "density": "深黑色", "placement": "下巴下方、衬衫衣领后方、手下方、翻领下方", "length": "短" }, "highlights": { "treatment": "镜面反射", "placement": "鼻尖、额头、头发纹理和表盘上" }, "ambient_fill": "前景缺失", "light_temperature": "中性/略暖闪光" }, "technical_specs": { "medium": "数码摄影", "style": "写实/生活方式", "texture": "光泽（头发、手表）与光滑面料和皮肤形成对比", "sharpness": "主体锐利", "grain": "深背景天空存在数码噪点", "depth_of_field": "中等（主体清晰，背景遥远但结构可见，散景极少）", "per": null } ```
原始提示词
{ "metadata": { "image_type": "photograph", "primary_purpose": "social media/portrait/lifestyle" }, "composition": { "rule_applied": "center composition", "aspect_ratio": "4:5", "layout": "single subject foreground with expansive deep background", "focal_points": [ "Subject's brightly lit face and crisp white shirt", "Clasped hands displaying luxury watch", "Glowing band of city lights in the background" ], "visual_hierarchy": "Viewer eye starts at the smiling face, travels down the bright V-shape of the unbuttoned white shirt to the posed hands and watch, then moves outward to the horizontal band of glowing city lights and mountain silhouette.", "balance": "symmetric subject placement contrasted by slightly asymmetric background landscape (mountain on the right)" }, "color_profile": { "dominant_colors": [ { "color": "Deep Black/Navy", "hex": "#0D1117", "percentage": "55%", "role": "background night sky and suit jacket" }, { "color": "Crisp White", "hex": "#FFFFFF", "percentage": "15%", "role": "primary subject shirt" }, { "color": "Warm Skin Tone", "hex": "#C68767", "percentage": "15%", "role": "primary subject face and hands" }, { "color": "Golden Yellow", "hex": "#F4C430", "percentage": "10%", "role": "accent city lights" } ], "color_palette": "complementary (warm golden/orange lights vs cool dark blue/black shadows)", "temperature": "warm foreground against a cool/neutral dark background", "saturation": "moderate (skin tones and lights are vivid, shadows are deeply desaturated)", "contrast": "high contrast" }, "lighting": { "type": "mixed (direct artificial flash on subject, ambient practical lights in background)", "source_count": "multiple sources - single dominant flash foreground, thousands of pinpoint ambient lights background", "direction": "front/slightly elevated", "directionality": "highly directional flash", "quality": "hard light (creating crisp shadows under chin, collar, and hands)", "intensity": "bright on subject/low-key overall", "contrast_ratio": "high contrast (dramatic foreground isolation)", "mood": "energetic/polished/glamorous", "shadows": { "type": "harsh defined edges", "density": "deep black", "placement": "under chin, behind shirt collar, under hands, beneath lapels", "length": "short" }, "highlights": { "treatment": "specular", "placement": "on nose tip, forehead, hair texture, and watch face" }, "ambient_fill": "absent in foreground", "light_temperature": "neutral/slightly warm flash" }, "technical_specs": { "medium": "digital photography", "style": "realistic/lifestyle", "texture": "glossy (hair, watch) contrasted with smooth fabric and skin", "sharpness": "tack sharp on subject", "grain": "digital noise present in the deep background sky", "depth_of_field": "medium (subject crisp, background distant but structurally visible, minimal bokeh)", "per