如何為 Chroma 撰寫提示詞

最重要的規則

1. 1

   寫成圖說,而不是標籤清單

   用完整的句子寫成一段:「A macro photograph of a beetle on a fern leaf.」Chroma 原生就能理解這種文字。

2. 2

   依照圖說的順序

   先寫主體和造型,再寫光線與色彩,接著是背景,最後用一句話描述成品質感。每個句子只負責一件事。

3. 3

   指明媒材與色調

   麻膠版畫、1970 年代的底片照片、復古旅遊海報;如果是平面設計作品,就寫出確切的顏色:藍綠色、奶油色和珊瑚色。

4. 4

   善用負面提示詞

   Chroma 會遵循負面提示詞。把一直出現但你不想要的東西列出來:失焦、模糊暈開、浮水印、多出來的人物。

5. 5

   草稿求快,定稿求精

   固定種子值,調低步數來測試不同的描述方式,最後出圖時再調高步數。

可以參考的提示詞

• 雙色分割的時尚人像

  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.

  為什麼有效: 這是 Chroma 模型卡上的範例,依照它的描述順序撰寫。搭配負面提示詞 low quality, ugly, unfinished, out of focus, deformed, blurry, smudged 使用。

• 雙色油墨的麻膠版畫

  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.

  為什麼有效: 媒材、確切的油墨顏色和質感,共同定義出小眾風格,這正是 Chroma 訓練時涵蓋的圖像類型之一。

• 充滿想像力的概念藝術

  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.

  為什麼有效: 每個句子只疊加一個層次:主體、光線、背景、質感,虛構的場景才能保持清楚易讀。

• 年代感十足的底片照片

  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.

  為什麼有效: 寫明年代、底片的特性,以及打在臉上的光源,比只寫「復古」更能營造出年代感。