如何为 Chroma 写提示词

最重要的规则

1. 1

   写图注,而不是标签列表

   用一个段落写完整的句子:“A macro photograph of a beetle on a fern leaf.” Chroma 天然能读懂自然语言。

2. 2

   遵循图注顺序

   先写主体和造型,再写光线和色彩,然后是背景,最后一句说明成片质感。每句话只负责一件事。

3. 3

   写明媒介和配色

   套色木刻版画、20 世纪 70 年代的胶片照片、复古旅行海报；如果是平面设计作品，还要写明确切的颜色：青绿色、奶油色和珊瑚色。

4. 4

   善用反向提示词

   Chroma 会遵循反向提示词。把总是出现、但你不想要的内容列出来：失焦、模糊晕染、水印、多余的人物。

5. 5

   草稿求快，成图求精

   固定 Seed，调低 Steps 来试不同的措辞，最终出图时再调高。

可参考的提示词

• 撞色时尚肖像

  A high-fashion close-up portrait of a blonde woman in clear sunglasses. The image uses a bold teal and red color split for dramatic lighting. The background is a simple teal-green. The photo is sharp and well-composed, designed for viewing with anaglyph 3D glasses. It looks professionally done.

  为什么有效: 这是 Chroma 模型卡中的官方示例，保留了它的描述顺序。搭配反向提示词 low quality, ugly, unfinished, out of focus, deformed, blurry, smudged 使用。

• 双色油墨木刻版画

  A linocut print of a gray heron standing in tall reeds, its neck curved into an S. The image uses only two inks, black and rust red, on cream paper, with bold carved lines and visible paper grain. The background is a low sun drawn as concentric rings. The print is crisp and balanced, with generous empty space.

  为什么有效: 媒介、具体的油墨颜色和质感共同定义了一种小众风格，这正是 Chroma 训练时覆盖的图像类型之一。

• 充满想象力的概念艺术

  Concept art of a desert caravan of long-legged mechanical camels crossing salt flats at dusk, riders in pale wrapped cloth on their backs. The image uses a warm orange sky fading to violet, long blue shadows, and dust lit from behind. The background is a line of distant mesas under the first stars. The painting is detailed and atmospheric, with a clear silhouette for every camel.

  为什么有效: 当每句话只构建一个层次时，虚构的场景也能保持清晰易读：主体、光线、背景、成品质感。

• 年代感胶片照片

  A 1970s film photograph of two teenagers sitting on the hood of a station wagon at a drive-in theater, sharing a paper bag of popcorn. The image uses warm faded colors, soft grain, and the glow of the movie screen on their faces. The background is rows of parked cars under a deep blue twilight sky. The photo feels candid and nostalgic.

  为什么有效: 写明年代、胶片的特质以及打在人脸上的光源，比单用“复古”一词更能营造出年代感。