← 廣告圖
健身前後對比廣告（分割畫面光影反差）
冷光對暖光的反差讓蛻變故事一眼成立，不用多寫一句文案；預先留好的上下留白讓標題和 CTA 直接疊上去，完全不跟照片打架。
適用模型Gemini Image (Nano Banana)Midjourney
prompt
Create a split-screen before/after fitness ad for {gym_name}. Left half: a {subject_description} in loose grey workout clothes, slouched posture, flat cool-toned lighting against a plain concrete wall. Right half: the same person standing tall in fitted athletic wear, confident expression, warm dramatic side lighting — visually celebrating {transformation_goal}. Divide the frame with a clean vertical seam and a bold {accent_color} diagonal slash element. Photorealistic, 85mm portrait-lens look, vertical 4:5 ratio for feed ads. Keep the top 15% clean for a headline overlay and leave a slim bottom strip empty for a CTA button. No text baked into the image.變數說明
| 變數 | 說明 | 範例 |
|---|---|---|
| {gym_name} | 健身房或品牌名稱 | Iron Path Fitness |
| {subject_description} | 主角的身分與年齡層描述 | 30-something office worker |
| {transformation_goal} | 想呈現的蛻變成果 | 12 kg weight loss and visible muscle tone |
| {accent_color} | 品牌強調色 | electric orange |
使用情境
健身房老闆或私人教練要為體態改造挑戰課程投放 IG／FB 廣告時。
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