如何编写 Gemini Nano Banana 的 JSON 提示词 指南
把生图提示词写成 JSON：风格、技术规格、材质、环境、构图各占一个字段。结构化之后每一项都能单独改而不影响其他。
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一分钟速览
- 核心结构讲怎么把画面拆成逻辑清晰的 JSON 段落。
- 风格定义、技术规格、材质属性、环境因素、构图控制，五大类字段逐个说明。
- 分离成独立对象的好处是精确控制——改材质不会连带改构图。
- 语法必须规范，括号逗号引号错一个就整体失效，提交前先验证。
- JSON 提示词这套思路本身是跨模型的，字段名换换就能搬。
✅ 如何编写 Gemini Nano Banana 的 JSON 提示词
（你需要这样做才能获得最佳效果）
🔹 CORE STRUCTURE（核心结构）
- 将图像提示词组织成逻辑清晰的 JSON 部分，系统化构建
- 使用正确语法：括号、逗号、引号必须规范
- 将视觉元素分离成独立对象，便于精确控制
- 提交前先验证 JSON 结构，避免错误
🔹 STYLE DEFINITION（风格定义）
- 指定主要风格："photorealistic", "cinematic", "documentary"
- 定义渲染质量："hyperrealistic", "detailed", "high-resolution"
- 设置表面纹理："authentic material properties", "natural wear patterns"
- 控制光照："natural", "studio quality", "dramatic", "soft ambient"
🔹 TECHNICAL SPECIFICATIONS（技术规格）
- 相机参数：景深、焦距、光圈效果、曝光
- 分辨率："high definition minimum", "professional quality"
- 渲染：抗锯齿、降噪、色彩深度标准
- 物理精度：重力效果、结构可信度
🔹 MATERIAL PROPERTIES（材质属性）
- 皮肤纹理："pores, natural imperfections, ethnic diversity"
- 布料细节："thread patterns, realistic drape, wear indicators"
- 表面："scratches, patina, authentic oxidation, natural irregularities"
- 透明度："accurate refraction, surface interactions"
🔹 ENVIRONMENTAL FACTORS（环境因素）
- 大气条件：距离雾霭、天气效果、湿度
- 时间/季节：光照条件、季节元素、温度提示
- 粒子效果：灰尘、湿气、大气深度
🔹 COMPOSITION CONTROLS（构图控制）
- 透视："natural human vision", "photography composition rules"
- 构图：三分法、黄金比例、专业取景
- 主体摆放：平衡、美观、符合审美
🔹 QUALITY KEYWORDS（质量关键词）
- 包含："hyperrealistic", "photographic quality", "natural lighting", "authentic textures"
- 避免："digital artifacts", "unrealistic proportions", "oversaturated colors"
- 参考："National Geographic", "professional photography standards"
可直接使用的 JSON 提示词模板
你只需要把对应的占位符替换成你的描述即可。这样可以保证结构清晰，符合 Gemini Nano Banana 的最佳实践。
{
"core_structure": {
"description": "简要说明整体图像目标",
"elements": [
{
"object": "主体名称或元素",
"attributes": ["关键特征1", "关键特征2"]
}
]
},
"style_definition": {
"primary_style": "photorealistic | cinematic | documentary",
"rendering_quality": "hyperrealistic | detailed | high-resolution",
"surface_textures": ["authentic material properties", "natural wear patterns"],
"lighting": "natural | studio quality | dramatic | soft ambient"
},
"technical_specifications": {
"camera_settings": {
"depth_of_field": "数值/描述",
"focal_length": "数值/描述",
"aperture": "f/1.8 | f/5.6 等",
"exposure": "数值/描述"
},
"resolution": "high definition minimum | professional quality",
"rendering": ["anti-aliasing", "noise levels", "color depth standards"],
"physics_accuracy": ["gravity effects", "structural believability"]
},
"material_properties": {
"skin_textures": ["pores", "natural imperfections", "ethnic diversity"],
"fabric_details": ["thread patterns", "realistic drape", "wear indicators"],
"surfaces": ["scratches", "patina", "authentic oxidation", "natural irregularities"],
"transparency": ["accurate refraction", "surface interactions"]
},
"environmental_factors": {
"atmosphere": ["distance haze", "weather effects", "humidity"],
"time_season": ["lighting conditions", "seasonal elements", "temperature cues"],
"particles": ["dust", "moisture", "atmospheric depth"]
},
"composition_controls": {
"perspective": "natural human vision | photography composition rules",
"framing": "rule of thirds | golden ratio | professional positioning",
"subject_placement": "balanced | aesthetically pleasing arrangement"
},
"quality_keywords": {
"include": ["hyperrealistic", "photographic quality", "natural lighting", "authentic textures"],
"avoid": ["digital artifacts", "unrealistic proportions", "oversaturated colors"],
"reference": ["National Geographic", "professional photography standards"]
}
}
⚡ 用法示例：
如果你要生成一张 “夜晚雨中霓虹灯下的未来城市街景”，你可以这样填：
{
"core_structure": {
"description": "夜晚的未来城市街景，霓虹灯照亮湿漉漉的街道",
"elements": [
{
"object": "街道",
"attributes": ["湿润", "反光", "未来风格"]
},
{
"object": "建筑",
"attributes": ["霓虹灯", "高层", "科幻氛围"]
}
]
},
"style_definition": {
"primary_style": "cinematic",
"rendering_quality": "high-resolution",
"surface_textures": ["authentic material properties"],
"lighting": "dramatic"
},
"technical_specifications": {
"camera_settings": {
"depth_of_field": "深景深",
"focal_length": "35mm",
"aperture": "f/2.8",
"exposure": "低曝光以突出霓虹灯"
},
"resolution": "professional quality",
"rendering": ["anti-aliasing", "color depth standards"],
"physics_accuracy": ["gravity effects"]
},
"environmental_factors": {
"atmosphere": ["weather effects", "湿度", "雨雾"],
"time_season": ["夜晚", "潮湿"],
"particles": ["雨滴", "水雾"]
},
"composition_controls": {
"perspective": "natural human vision",
"framing": "rule of thirds",
"subject_placement": "balanced"
},
"quality_keywords": {
"include": ["photographic quality", "authentic textures"],
"avoid": ["oversaturated colors"],
"reference": ["professional photography standards"]
}
}
最小可用 JSON 提示词模板
{
"description": "简要描述你要生成的图像",
"style": {
"primary": "photorealistic | cinematic | documentary",
"quality": "hyperrealistic | high-resolution",
"lighting": "natural | dramatic | studio quality"
},
"technical": {
"resolution": "professional quality",
"camera": "focal length/景深/光圈 等"
},
"environment": {
"time": "day | night | season",
"effects": ["weather effects", "atmospheric depth"]
},
"composition": {
"perspective": "natural human vision",
"framing": "rule of thirds | golden ratio"
},
"quality_keywords": {
"include": ["photographic quality", "authentic textures"],
"avoid": ["digital artifacts", "oversaturated colors"]
}
}
⚡ 示例：
如果你要生成 “白天阳光下的古老石桥”，可以这样写：
{
"description": "阳光下的古老石桥，倒映在清澈的河面上",
"style": {
"primary": "photorealistic",
"quality": "high-resolution",
"lighting": "natural"
},
"technical": {
"resolution": "professional quality",
"camera": "35mm, f/5.6, 深景深"
},
"environment": {
"time": "day",
"effects": ["清澈的天空", "轻微雾气"]
},
"composition": {
"perspective": "natural human vision",
"framing": "rule of thirds"
},
"quality_keywords": {
"include": ["photographic quality", "authentic textures"],
"avoid": ["oversaturated colors"]
}
}
来源
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