提示词库 · 珠宝摄影
十个实测提示词，对付最难拍的东西——抛光金属和刻面宝石。微距细节、杂志级主图、干净的电商白底图，每条都附未经修图的成片和生成它的模型。
珠宝是一道布光题，不是一道主体题。抛光金属就是一面镜子——它本身没有颜色，只反射周围的一切——所以提示词必须描述金属反射的是什么。这正是真实珠宝拍摄要用大面积柔光源和白卡的原因：「lit by a large diffused softbox directly overhead with white bounce cards on both sides, producing long soft highlights along the band and no harsh hotspots」。这么写，金属就显得贵。写「beautiful lighting」，你得到的是一枚灰扑扑、随机爆掉几块高光的戒指。
另一半是材质词汇。「Brushed 18k yellow gold」「high-polish platinum」「oxidised blackened silver」「brilliant-cut diamond with visible fire and dispersion」「cabochon-cut moonstone with a soft blue sheen」——每一个都是行为各异的不同表面，而模型认得它们。再补上承托的台面和镜头：「on a slab of honed grey marble, 100mm macro at f/8, focus stacked, tack sharp throughout」。本页每张图都是旁边那条提示词未经修改的首次输出，在BananaBanana上生成。
能，而这正是它开始产生商业价值的地方。文本提示词生成的是一件并不存在的作品——用于概念、情绪板、campaign方向和平台类目图很好，但不能用来卖某一件具体商品。真实商品请上传自己的照片并使用编辑功能：「keep the ring exactly as it is, replace the background with honed grey marble, relight with a large overhead softbox and white bounce cards, remove the dust specks」。作品保持真实，呈现质感却上去了。
这个区分不只关乎实操，也关乎法律。商品详情页必须展示实际售出的那件东西，店铺页面上摆一张生成的替身是虚假宣传，不是营销。生成用于商品周边的视觉——banner、生活方式场景、季节性campaign图——编辑则用于商品图本身。本页所有布光语言在两种模式下同样有效。
下面每张图片都是所在卡片提示词的未修输出——没有从几十次尝试里挑好的，也没有修图。模型徽标标明了它由什么生成、花了多少钱。
Macro product photograph of a platinum solitaire ring with a brilliant-cut diamond, standing upright on a slab of honed grey marble. Lit by a large diffused softbox directly overhead with white bounce cards on both sides, producing long soft highlights along the polished band and visible fire and dispersion in the stone. 100mm macro lens at f/8, focus stacked, tack sharp throughout, cool neutral white balance, luxury catalogue style.
Macro photograph of a heavy 18k yellow gold curb chain coiled loosely on a slab of dark travertine, one link catching a bright specular highlight. Large diffused overhead source with a black flag on the left to create a defined dark edge along the metal, warm reflections in the gold. 100mm macro at f/5.6, shallow band of focus across the front links, rich warm tones, editorial jewellery style.
Product photograph of a strand of freshwater pearls laid in a soft S-curve across rumpled ivory silk, each pearl showing a gentle lustre gradient rather than a hard highlight. Very soft, broad, diffused light from above and slightly behind, no harsh reflections. 90mm macro at f/6.3, creamy neutral palette, elegant and restrained.
Dramatic macro photograph of a gold ring set with a deep green emerald-cut stone, resting on a sheet of black glass that gives a clean mirror reflection beneath it. Single narrow strip softbox raking from the upper right creates a long highlight down the shank, deep shadows elsewhere, background falls to pure black. 100mm macro at f/8, jewel tones, high-end advertising style.
Overhead flat lay of three pairs of sterling silver hoop earrings in different diameters, arranged with even spacing on a pale sand-coloured textured paper. Broad soft diffused daylight from above, gentle contact shadows, no glare. 60mm macro at f/8, clean minimal e-commerce styling with generous negative space, cool neutral tones.
Product photograph of five slim stacking rings — mixed brushed gold, high-polish rose gold and oxidised blackened silver — stacked on a clear acrylic riser against a soft gradient grey backdrop. Large overhead diffusion with white cards either side so each metal reads distinctly. 100mm macro at f/9, sharp front to back, contemporary jewellery brand look.
Macro photograph of a silver pendant set with a cabochon-cut moonstone showing its soft blue adularescent sheen, hanging from a fine chain against a smooth slate background. Soft directional light from the upper left brings out the sheen inside the stone; a subtle blue rim of reflected light along the bezel. 100mm macro at f/5.6, cool moody palette, artisan jewellery feel.
Still life product photograph of a steel dress watch with a navy dial lying beside two mother-of-pearl cufflinks on a folded charcoal wool cloth. Large diffused softbox above and slightly behind, white card in front lifting the shadows, controlled reflections on the crystal. 100mm macro at f/8, restrained masculine palette of steel, navy and charcoal, no visible branding or text on the dial.
Clean e-commerce packshot of a thin gold bangle standing upright on a pure white seamless background, evenly lit from all sides by large diffusion panels so shadows are almost eliminated and the metal reads bright and consistent. 100mm macro at f/11, sharp throughout, generous white space around the product, marketplace listing style.
Editorial jewellery photograph of a hand at rest against a warm terracotta plaster wall, wearing three delicate gold rings and a fine chain bracelet, fingers relaxed and slightly curled. Soft late-afternoon window light from the left, warm skin tones with natural texture, shallow focus on the rings. 85mm lens at f/2.8, elegant lifestyle campaign feel, neutral manicure.
抛光金属是一面没有自身颜色的镜子。「Large diffused softbox overhead with white bounce cards either side」告诉模型该往反射里放什么；「nice lighting」只会让它灰暗斑驳。
真正拍珠宝的人会在旁边立黑卡，让金属有一条明确的暗边，而不是化进背景里。写上「black flag on the left」，你得到的正是这个。
「Brilliant-cut diamond with visible fire」「cabochon moonstone with blue adularescence」「brushed versus high-polish gold」——模型认得这些术语，渲染结果各不相同。笼统的「gemstone」换来的就是笼统的玻璃。
珠宝很小，景深因此很薄。「100mm macro at f/8, focus stacked, sharp throughout」能让整件都在焦内，这正是目录工作需要的——f/2.8留给生活方式类的镜头。
不能当作商品图。详情页必须展示你实际发货的那件东西，用合成替身属于虚假宣传——好几个平台会因此下架商品。生成用于banner、campaign图和生活方式场景，需要让真实作品更好看时，就编辑你自己的照片。
上传照片，只描述改动：换背景，用顶部柔光箱和反光板重新布光，清掉灰尘和指纹。作品保持拍摄时的原样，而呈现质感上去了——本页的布光词汇在编辑模式下同样奏效。
Nano Banana Pro，几乎没有对手。镜面高光、刻面宝石和反射，恰恰是便宜模型糊成一团的地方——这里十张中有五张用Pro正是这个原因。平铺构图和布光简单的白底图，Lite完全够用。
因为提示词没有描述它的光学表现。补上切工以及它带来的效果——「brilliant-cut with visible fire and dispersion」「step-cut with clean internal reflections」「cabochon with a soft internal sheen」——并使用更硬、更有方向的光。大面积平光会扼杀那种让宝石看起来真实的火彩。
手是图像模型最难的部分，所以尽量简单：一只手，放松，手指微微弯曲，不要复杂的握姿。上面那张杂志感手部特写就是刻意这样摆的。做好重新生成两三次的准备，或者裁得离作品更近一些。
