如何为 Seedream 写提示词

最重要的规则

1. 1

   用句子描述，不要罗列词语

   一句包含主体、动作和地点的话（“黎明时分，一位老渔夫在码头上补渔网”），比“渔夫，渔网，码头，黎明”能给 Seedream 提供多得多的信息。

2. 2

   先说明图像的类型

   如果画面有明确用途，就先说出来：“一本书的封面，……”“一张产品展示图，……”“一块街头招牌，……”。版式会随之确定。

3. 3

   想写上画面的每个字都要加引号

   文字要放在双引号里，并说明位置和样式：门上方挂着一块手绘招牌，上面用白色衬线字写着“OPEN LATE”。

4. 4

   修图先说明哪些不能动

   先列出保持不变的部分，再写唯一的改动，最后写这个改动对场景的影响：新的阴影、倒影，以及它与光线如何融合。

5. 5

   尺寸交给设置

   在设置里选择宽高比和分辨率。在提示词里写“16:9”或“4K”不会有任何效果。

可参考的提示词

• 人物物品再多也井然有序的场景

  

  A watchmaker's workbench by a rain-streaked window at dusk. Brass gears and tiny screws are scattered across a green leather mat, a loupe rests on an open pocket watch, tweezers stand in a small ceramic cup next to a tin of oil, and a gooseneck lamp casts a warm pool of light. City lights blur outside the window. 50mm photograph, shallow depth of field.

  为什么有效: 每件物品都用位置来指明，而不是用形容词来描述，再用一盏灯确定光线，所以即使场景很满，也不会漏掉任何东西。

• 清晰可读的文字

  

  A retro food truck parked on a beach road at sunset. Its side is painted with the name "SALT & SUN TACOS" in hand-lettered red script, and a menu board beside the window lists "Fish Taco 4", "Elote 3", and "Horchata 2" in white chalk. String lights, palm trees, and a pink sky behind it. Cinematic photograph.

  为什么有效: 每段文字都加了引号、保持简短，并指定了载体和样式，所以生成的文字会与你写的一致。

• 让你的 Character 出现在外景中

  Leo (@leo) wears @rain-jacket and waits at the edge of @tram-stop on a wet evening, hands in his pockets, glancing down the street for the tram. Keep his face, his hair, and the color and cut of the jacket exactly as in their images. Photorealistic, 35mm lens at eye level, the glow of a shop window behind him from the left, reflections on the wet pavement.

  为什么有效: Character、服装和地点各司其职，名字只绑定一次，光线也有明确来源。你可以换成自己保存的 Character 和 References。

• 只改一处，其余不动

  Keep the room, the camera angle, and the afternoon light exactly as they are. Replace the gray sofa with a deep green velvet sofa of the same size, and add a tall fiddle-leaf fig in a woven basket in the empty corner by the window. Both cast soft shadows to the left, like the rest of the room.

  为什么有效: 先上传房间照片。提示词先确定哪些保持不变，再做两处指定的修改，并要求阴影相匹配，这样修出来的图才显得真实。