
8月底,Gemini-2.5-flash-image(代号 Nano Banana)正式上线,持续数周的热度早已把全球网友的创作热情点燃。什么3D手办,跨界联名、赛博合影,纷纷依靠这个香蕉模型给一一实现,朋友圈和各大社区热闹非凡。
不过,热闹归热闹,仔细一看,还是能找到一些唱反调的声音。有用户吐槽诸如生成图崩掉了;提示词喂进去,产出的结果牛唇不对马嘴。而笔者本人在使用中也遭遇多次翻车,产出不少bad cases,只得回炉重造。


昨天,Google AI Studio 发了一篇官方提示词模板教程,算是给广大用户发了个手把手的教学指南。文中列举了 6 个典型的文生图应用场景,描述了推荐的自然语言提示词撰写格式。 302.AI 这边也遵循着官方指导,照着这6个场景,一个个跑了实测,看看复刻的质量水准是否稳定高效,供各位参考,进一步玩转Nano Banana模型。

I.官方教程内容
在官方文章前言部分,着重强调了以下内容,值得mark:
本指南将教您如何编写提示并提供从 Gemini 2.5 Flash 中获得最佳结果的说明。这一切都始于一个基本原则:
描述场景,不要只列出关键词 。该模型的核心优势在于其深刻的语言理解能力。一个叙述性的、描述性的段落几乎总是比简单的,不连贯的单词列表产生更好、更连贯的图像。
案例1:影像级场景 Photorealistic Scenes
对于逼真的图像,请像摄影师一样思考。提及相机角度、镜头类型、照明和精细细节将引导模型获得逼真的结果。
Template: A photorealistic [shot type] of [subject], [action or expression], set in [environment]. The scene is illuminated by [lighting description], creating a [mood] atmosphere. Captured with a [camera/lens details], emphasizing [key textures and details]. The image should be in a [aspect ratio] format.
模板 :设置在[环境]中的[被摄体]、[动作或表情]的逼真[镜头类型]。场景被【灯光描述】照亮,营造出【心情】氛围。使用 [相机/镜头细节] 拍摄,强调 [关键纹理和细节]。图像应采用 [纵横比] 格式。
简析:从Midjourney时代一路走来的用户想必对此格式的提示词并不陌生,依然是遵循:主体-环境-拍摄角度-拍摄器材的思路进行撰写。如若对摄影器材不甚了解,只需全权交给LLM,跟它说清楚你脑海中想要的场景即可:是想要广角的充满冲击力的自然风光,还是毫发毕现的人像特写。记住你是导演,摄影的事交给摄影师(LLM和生图模型)执行即可。
官方案例:
Example Prompt:
A photorealistic close-up portrait of an elderly Japanese ceramicist with deep, sun-etched wrinkles and a warm, knowing smile. He is carefully inspecting a freshly glazed tea bowl. The setting is his rustic, sun-drenched workshop. The scene is illuminated by soft, golden hour light streaming through a window, highlighting the fine texture of the clay. Captured with an 85mm portrait lens, resulting in a soft, blurred background (bokeh). The overall mood is serene and masterful. Vertical portrait orientation.
示例提示:
一位年长的日本陶艺家的逼真特写肖像,有着深邃的皱纹和温暖、会心的微笑。他正在仔细检查一个刚上釉的茶碗。背景是他质朴的、阳光普照的工作室。场景被柔和的黄金时段光线从窗户照射进来,突出了粘土的细腻纹理。使用 85mm 人像镜头拍摄,产生柔和、模糊的背景(散景)。整体气氛宁静而精湛。垂直纵向。

复刻案例:
Example Prompt:
A hyper-realistic close-up half-body portrait of a young European female chef with blonde hair, wearing a tall white chef's hat. She holds a chef's knife in her right hand, concentrating on chopping fresh ingredients on a cutting board. The setting is a cozy home kitchen filled with natural sunlight, conveying a warm and lived-in atmosphere. Captured with a 50mm portrait lens, featuring shallow depth of field and natural background bokeh.
示例提示:
一幅超写实的欧洲年轻金发女厨师半身特写,她戴着高高的白色厨师帽,右手握着厨师刀,专注地在砧板上切新鲜食材。场景位于阳光充足、温馨舒适的家庭厨房,氛围温暖而生活化。画面以50mm人像镜头拍摄,浅景深,背景呈现自然的虚化效果。

案例2:风格插画/贴纸 Stylized Illustrations & Stickers
要为您的项目创建贴纸、图标或资产,请明确说明样式,并记得在需要时请求白色背景。
Template: A [style] sticker of a [subject], featuring [key characteristics] and a [color palette]. The design should have [line style] and [shading style]. The background must be white.
模板 :[主题]的[风格]贴纸,具有[关键特征]和[调色板]。设计应具有 [线条样式] 和 [阴影样式]。背景必须是白色的。
简析:简单但常用的AIGC场景应用,除了制作贴纸,插画外,表情包更是常用案例。需要在提示词中明确输出对象风格为贴纸,白色背景,方便后期进一步编辑操作与应用。
官方案例:
Example Prompt: A kawaii-style sticker of a happy red panda wearing a tiny bamboo hat. It's munching on a green bamboo leaf. The design features bold, clean outlines, simple cel-shading, and a vibrant color palette. The background must be white.
示例提示 :卡哇伊风格的贴纸,描绘了一只戴着小竹帽的快乐小熊猫。它正在咀嚼一片绿色的竹叶。该设计具有大胆、简洁的轮廓、简单的卡通阴影和充满活力的调色板。背景必须是白色的。

复刻案例:
Example Prompt: A Grand theft auto-style sticker of a western coast young lady. Blonde hair, with red sun glasses. Big smile, one hand is holing a beer. She has tattoos on her right arm. The design features bold, clean outlines, simple cel-shading, and a vibrant color palette. The background must be white.
一款侠盗猎车手风格的贴纸,主人公为一位西海岸风格的年轻女性。金发,戴着红色墨镜,面带灿烂笑容,一只手拿着啤酒。她的右臂有纹身。设计采用粗犷清晰的线条、简洁的赛璐璐上色以及鲜明的色彩搭配。背景必须为白色。

案例3: 图像中的准确文本 Accurate Text in Images
Template: Create a [image type] for [brand/concept] with the text "[text to render]" in a [font style]. The design should be [style description], with a [color scheme].
****模板 :在 [字体样式] 中为 [品牌/概念] 创建 [图片类型],文本为"[要渲染的文本]"。设计应为[样式描述],并带有[配色方案]。
简析:常见的设计案例需求,如有明确的设计对象属性信息(如咖啡馆),明确文本内容,字体,配色风格,均建议输入。
官方案例:
Prompt: Create a modern, minimalist logo for a coffee shop called 'The Daily Grind'. The text should be in a clean, bold, sans-serif font. The design should feature a simple, stylized icon of a coffee bean seamlessly integrated with the text. The color scheme is black and white.
提示: 为一家名为"The Daily Grind"的咖啡店创建一个现代、简约的徽标。文本应采用干净、粗体、无衬线字体。设计应具有与文本无缝集成的简单、风格化的咖啡豆图标。配色方案是黑色和白色。

复刻案例:
Example Prompt: Create a retro, old-school logo for a vintage clothing shop called 'The Decker Store'. The text should be in a retro, bold, hand written font. The design should feature a stylized icon of an anchor seamlessly integrated with the text. The color scheme is blue and white.
为一家名为 "The Decker Store" 的复古服装店设计一个复古、老派风格的标志。文字使用复古、粗体、手写式字体。设计中应包含一个锚的图标,并与文字无缝融合。配色方案为蓝色和白色。

案例4:产品模型和商业摄影 Product Mockups & Commercial Photography
为电子商务、广告或品牌推广创建干净、专业的产品照片。
Template: A high-resolution, studio-lit product photograph of a [product description] on a [background surface/description]. The lighting is a [lighting setup, e.g., three-point softbox setup] to [lighting purpose]. The camera angle is a [angle type] to showcase [specific feature]. Ultra-realistic, with sharp focus on [key detail]. [Aspect ratio].
模板: [背景表面/描述] 上 [商品描述] 的高分辨率工作室照明产品照片。照明是 [照明设置,例如三点柔光箱设置] 到 [照明目的]。摄像机角度是[角度类型],以展示[特定特征]。超逼真,专注于[关键细节]。[纵横比]。
电商/品牌常见的需求场景,提示词中需明确输入studio-lit product photograph(工作室光照环境下的产品摄影),重在对产品拍摄角度,环境光照的提示词撰写。在该任务场景中,基本都会使用图生图模式,因此对产品主体并不需要过多描述。
官方案例:
Example Prompt: A high-resolution, studio-lit product photograph of a minimalist ceramic coffee mug in matte black, presented on a polished concrete surface. The lighting is a three-point softbox setup designed to create soft, diffused highlights and eliminate harsh shadows. The camera angle is a slightly elevated 45-degree shot to showcase its clean lines. Ultra-realistic, with sharp focus on the steam rising from the coffee. Square image.
示例提示: 一张高分辨率、工作室照明的产品照片,照片中呈现在抛光混凝土表面上的极简主义哑光黑色陶瓷咖啡杯。照明采用三点柔光箱设置,旨在创建柔和、漫射的高光并消除刺眼的阴影。摄像机角度是略微升高的 45 度镜头,以展示其简洁的线条。超逼真,重点关注咖啡中升起的蒸汽。方形图像。

复刻案例:
A high-resolution, studio-lit product photograph of a bottle of Jim Bean whisky, presented on a clear crystal like surface. The lighting is a three-point softbox setup designed to create soft, diffused highlights and eliminate harsh shadows. The camera angle is a slightly elevated 45-degree shot to showcase its clean lines. Ultra-realistic, with small water drops on the bottle.
一张高分辨率、摄影棚打光的产品照片,一瓶 Jim Beam 威士忌放置在清澈如水晶般的表面上。灯光采用三点柔光箱布光,以营造柔和的漫射高光并消除生硬的阴影。相机角度为略微抬高的 45 度视角,以展现瓶身的流畅线条。画面超逼真,瓶身上带有细小的水珠。

案例5:极简和负空间设计 Minimalist & Negative Space Design
非常适合为网站、演示文稿或营销材料创建背景,其中文本将被覆盖。
Template: A minimalist composition featuring a single [subject] positioned in the [bottom-right/top-left/etc.] of the frame. The background is a vast, empty [color] canvas, creating significant negative space. Soft, subtle lighting. [Aspect ratio].
模板 :极简主义构图,在画面的 [右下/左上/等] 中有一个 [主题]。背景是一块广阔、空旷的[彩色]画布,创造了大量的负空间。柔和、微妙的灯光。[纵横比]。
摄影爱好者近些年对负空间设计这种风格恐怕不陌生,简单说就是画面会有大量的留白空间,给人深邃,静谧的视觉感受。从提示词上而言,可以明确输入极简主义构图,负空间,对背景的具体要求。
官方案例:
Example Prompt: A minimalist composition featuring a single, delicate red maple leaf positioned in the bottom-right of the frame. The background is a vast, empty off-white canvas, creating significant negative space for text. Soft, diffused lighting from the top left. Square image.
示例提示 :极简主义构图,在画面的右下角有一片精致的红色枫叶。背景是一块广阔、空旷的灰白色画布,为文本创造了大量的负空间。左上角柔和的漫射照明。方形图像。

复刻案例:
A minimalist composition of photography featuring a single, lone seagull positioned in the bottom-left of the frame. The background is a vast, baby blue color ocean, white waves as details. creating significant negative space for text.
一幅极简主义摄影构图,一只孤单的海鸥位于画面左下角。背景是一片辽阔的浅蓝色大海,以白色海浪作为细节,留出大量负空间以便放置文字。

案例6:顺序艺术(漫画面板/故事板) Sequential Art (Comic Panel / Storyboard)
逐个面板创建引人入胜的视觉叙事,非常适合通过专注于清晰的场景描述来开发故事板、连环画或任何形式的顺序艺术。
Template: A single comic book panel in a [art style] style. In the foreground, [character description and action]. In the background, [setting details]. The panel has a [dialogue/caption box] with the text "[Text]". The lighting creates a [mood] mood. [Aspect ratio].
模板 :[艺术风格]风格的单个漫画书面板。在前景中,[角色描述和动作]。在后台,[设置详细信息]。该面板有一个带有文本"[文本]"的[对话框/标题框]。灯光营造出一种[情绪]的氛围。[纵横比]。
相对更垂直,专业的创作情景。提示词需要明确美术风格,前景,后景,人物形象以及具体文本,属于复杂多任务的提示词撰写,对于模型的能力提出了较高的挑战。
官方案例:
Example Prompt: A single comic book panel in a gritty, noir art style with high-contrast black and white inks. In the foreground, a detective in a trench coat stands under a flickering streetlamp, rain soaking his shoulders. In the background, the neon sign of a desolate bar reflects in a puddle. A caption box at the top reads "The city was a tough place to keep secrets." The lighting is harsh, creating a dramatic, somber mood. Landscape.
示例提示 :具有坚韧不拔的黑色艺术风格的单个漫画书面板,采用高对比度的黑白墨水。前景中,一位身穿风衣的侦探站在闪烁的路灯下,雨水浸湿了他的肩膀。在背景中,一个荒凉酒吧的霓虹灯倒映在水坑里。顶部的标题框写着"这座城市是一个很难保守秘密的地方。灯光刺眼,营造出一种戏剧性、阴郁的气氛。景观。

复刻案例:
A single comic book panel in a neon color, cyberpunk art style. In the foreground, an Asian girl like the protagonist of ghost in shell stands on the top floor of a skyscrapers. Rain soaking her shoulders. In the background, the neon signs and billoards on the buildings reflects in a puddle. A caption box at the top reads "The Sin City Chapter." The lighting is harsh, creating a dramatic, futuristic vibe.
一幅单独的漫画分镜,采用霓虹色的赛博朋克艺术风格。前景中,一名仿佛《攻壳机动队》女主角的亚洲女孩站在摩天大楼的顶层,雨水浸湿她的肩膀。背景里,建筑物上的霓虹招牌与广告牌倒映在水洼中。画面上方有一个标题框,写着 "The Sin City Chapter"。灯光强烈,营造出富有戏剧性的未来氛围。

