Nano Banana提示词官方教程：精选技巧与实战

最近，谷歌Nano Banana在图像编辑领域引发热议。其最大突破在于多轮细化与主体一致性保持，同时迭代式编辑和文字排版能力也相当出色；同一角色可置于不同场景，并支持两图融合。不过，基础编辑如精确裁剪仍存在短板。做“置换环境”写实合成时，场景一致性与光源匹配是关键——社区反复验证过这一点。

以下是官方教程与媒体评测中筛选出的实战提示词清单，以英文呈现，可借助翻译工具转为中文。

一、分镜 / 角色一致性

此模块专用于上传人物或虚拟角色后直接生成分镜图。

1. Turn the uploaded portrait into a collectible **character figure**. Place a branded box behind it (box shows the character image), a computer screen on the side showing a Blender modeling viewport, and a round plastic base under the figure. **PVC look**, indoor studio, **realistic lighting, film tone**, keep face identity. 2. Keep the same character. Scene 1: **subway platform**, cool blue ambience, rim light from behind; camera at chest height, medium shot. 3. Same character, **coffee shop close-up**, shallow depth-of-field (bokeh), warm golden hour light, hands holding a paper cup with subtle steam, keep identity and hairstyle. 4. Same character, **office night scene**, glass reflections, city lights bokeh, three-point lighting, medium-wide. 5. Same character, warehouse with volumetric light rays through windows; dust motes, slightly desaturated cinematic look. 6. Storyboard 6 frames: hero intro, establishing shot, close-up on hands, over-the-shoulder UI shot, product hero, end card. Keep character identity across frames, consistent wardrobe. 7. Turn pose to a walking forward action, slight motion blur on legs, maintain facial details. 8. Same character in **rainy street**, wet asphalt reflections, neon signs; keep eye color and freckles. 9. Same character, studio packshot background in neutral gray; soft top light, fill card from camera left; expressions neutral. 10. Generate a shot list of 8 frames for an unboxing: box on table → hands open → figure removed → detail close-ups → turntable shot → closing hero. Keep product scale and branding.

二、电商 / 产品合成

商品与场景融合是该方向的核心需求。

1. Merge image1 (product) with image2 (modern kitchen). Place the product on a **marble countertop**, keep realistic reflections and shadows; color temperature ~5000K, slight vignette. 2. Cosmetics bottle on **acrylic pedestal**, seamless paper backdrop, softbox from right, subtle gradient background, specular highlights controlled. 3. Sneakers on **concrete block**, low-angle hero shot, studio rim light, faint haze for depth. 4. Smartphone **floating exploded view**: separated layers for screen, mid-frame, camera module; dark studio, glossy reflections managed. 5. Watch macro shot, **90° top-down**, soft diffused light, brushed metal texture visible, anti-alias text on dial. 6. A/B variants: same layout, change only background material (wood / stainless / terrazzo), keep product color constant. 7. Lifestyle placement: living room sofa, daylight from window camera left, product on side-table; white balance matched to scene. 8. Promo trio: front / 45° / top angles in one session; consistent brand palette and shadows.

三、人像妆造 / 服饰替换

此模块关键在于保持身份一致，尤其面部细节的连续性。

1. Keep face identity; change hairstyle to **retro bob**, add thin eyeliner, soft skin retouch while preserving pores, realistic hair strand flyaways. 2. Outfit swap to **streetwear (oversized hoodie + cargo pants)**, neutral studio background, soft Rembrandt pattern lighting. 3. Add sunglasses with subtle reflections, ensure eyes still faintly visible through lens tint. 4. Formal portrait, **key light 45°**, fill −1EV, background seamless #EAEAEA, color-accurate skin tone. 5. Outdoor candid, overcast sky as giant softbox, slight film grain, maintain freckles and moles. 6. Headshot for ID: straight-on camera, no smiles, flat even light, neutral background, maintain exact facial geometry.

四、光影与摄影语汇

用摄影师思维构建提示词，往往更直接有效。

1. Film noir: **hard key from high angle**, deep shadows, practical lamp in background, smoke for volume. 2. Golden hour backlight, **rim light on hair**, flare streaks, warm highlights ~5600K. 3. Top-down softbox with negative fill on both sides to shape the face, subtle catchlight. 4. High-key beauty, near-white background, contrast low, speculars controlled. 5. Rain reflections, **wet-down street**, neon glow; long-exposure light trails. 6. Product hero: **flagged highlights**, gradient card for polished metal, reflection on base kept tight.

五、材质与质感

让“质地”更可信，对专业级输出至关重要。

1. PVC plastic look, slightly translucent edges, smooth specular roll-off, no micro-scratches. 2. Anodized aluminum, fine linear brushing, soft anisotropic highlights. 3. Matte ceramic, soft diffuse, micro-pitted texture visible only in macro. 4. Brushed stainless steel with subtle fingerprints near button, realistic. 5. Frosted glass bottle, internal light scatter, bright meniscus line on liquid.

六、文字 / 海报

官方强调Nano Banana对含文字图像做了针对性优化，适合海报、Logo和封面需求。

1. Poster: bold headline “AI VIDEO STUDIO”, sub-headline small caps, clean sans serif, centered layout; hero product bottom-right, strong grid, optical margin alignment. 2. Minimalist **event flyer**: date big numbers “09·10”, venue in small line below; keep text crisp and aligned. 3. App mock poster: phone frame with screen UI, headline 5-6 words, badge “NEW”. 4. Brand logo lockup on dark background, subtle glow, high legibility, no distortions. 5. YouTube thumbnail style: big face close-up + 3-5 word punchy title; high contrast; rule of thirds.

七、合成 / 场景替换

两图融合是Nano Banana一大亮点，关键在于光源、焦距和色温匹配以增强真实感。

1. Replace background with snowy mountain scene; match key light from camera right; footprints faint in snow. 2. Place subject into **museum gallery**, polished floor reflections, soft track lighting from ceiling. 3. Combine portrait with **night city rooftop**; wind-blown hair; cool key, warm practicals behind. 4. Merge product with **bathroom marble vanity**; soft window light, mirror reflection consistent. 5. Subject into **library**, warm tungsten practicals; lens fall-off consistent with 50mm look. 6. Remove clutter from desk; keep laptop and mug; fill missing areas with plausible textures.

八、镜头语言 / 构图

给画面调度更多可控性。

1. 35mm equivalent, eye-level, medium shot, rule of thirds. 2. 85mm portrait, shallow DOF, background separation. 3. Top-down **flat-lay**, grid-aligned objects, neat spacing. 4. Low-angle hero shot, leading lines converge to subject. 5. Tilt-shift miniature look, thin plane of focus through subject.

九、特效 / 情绪氛围

1. Light fog + god rays from window; particles visible only against backlight. 2. Subtle film grain (fine), chromatic aberration minimal, letterboxed. 3. Rain streaks + surface ripples on puddles, reflections intact. 4. Fireflies/bokeh spheres floating, depth-based size variation. 5. Confetti burst, shallow DOF; motion blur only on confetti.

十、多轮对话脚本

多轮迭代是官方推荐的最佳实践。以下是几个实际的多轮对话脚本。

脚本A：人物置景分镜（3步）

第1轮：Upload the portrait. Place the same person in a sunlit café terrace; warm golden hour, shallow DOF, cinematic. 第2轮：Keep identity. Add a laptop with code editor on screen; add a cup with visible steam; adjust white balance slightly cooler. 第3轮：Tighten composition to medium shot; brighten catchlights; add gentle film grain.

脚本B：商品三视图（3步）

第1轮：Front hero shot on neutral backdrop; soft top light, clean shadows. 第2轮：Add 45° view; match exposure and shadow direction. 第3轮：Add top view; assemble a 3-panel layout with consistent margins.

脚本C：角色手办化（3步）

第1轮：Turn subject into a PVC figure on round base; indoor studio, film tone. 第2轮：Add branded box behind + monitor showing Blender modeling. 第3轮：Refine edges on hair and fingers; ensure specular highlights are smooth.

十一、N8N集成用的字段模板

{
  "prompt":"Turn the uploaded portrait into a collectible character figure on a round plastic base; branded box behind; monitor shows Blender viewport; PVC look; indoor studio; realistic lighting; film tone; keep identity.",
  "style_notes":"cinematic, shallow DOF, subtle film grain",
  "consistency_notes":"keep face geometry, eye color, hairstyle",
  "scene_alt":["sunlit café terrace","office at night","rainy neon street"],
  "product_merge":{
    "bg":"modern kitchen marble countertop",
    "shadows":"match key from camera right",
    "reflections":"controlled, realistic"
  }
}

实操要点

最后，几个关键技巧值得记住：

• 用段落描述场景，避免堆砌关键词。先定大结构，再补充光影和材质细节——这是官方推荐的写法。
• 多轮微调时，每次只更改1到2个因素，例如光源方向、景深、裁边或高光控制。
• 角色一致性方面，上传清晰参考图，固定发型、肤色和面部细节的用语，避免大幅冲突改动。场景与光源匹配才是让画面更真实的核心。
• 需注意，一些基础编辑如精确裁剪到特定比例，体验可能一般。有效规避方法是在生成时就指定好构图与留白。

来源：互联网