Nano Banana プロンプトは、主体、スタイル、構図、ライティング、制約の順で書くと安定します。曖昧な短文より、レンズ感、素材、背景、肌質、商品ラベル保持、避けたい失敗を具体的に書くほうが制御しやすくなります。
Create a clean ecommerce product photo on a pure white background with soft studio lighting, sharp edges, realistic packaging detail, readable label text, and natural shadow under the product.
Use this for marketplace-style product images where clarity matters more than mood.
Place this product in a minimal lifestyle scene on a light stone surface with warm window light, subtle props, realistic scale, and premium commercial photography style.
Good for Shopify PDP images, launch pages, and ad tests.
Create a clean professional portrait with natural skin texture, soft window light, shallow depth of field, neutral background, realistic facial proportions, and sharp eye detail.
Works better than asking for a generic headshot because it controls light and texture.
Generate a fashion portrait with editorial lighting, sharp facial detail, minimal background clutter, full outfit visibility, natural fabric texture, and premium magazine composition.
Use it when clothing shape and material should remain readable.
Create an anime character illustration with clean line art, expressive eyes, balanced color palette, simple readable background, controlled highlights, and no distorted hands.
The hand constraint is not perfect, but it reduces the most obvious failures.
Create a 4:5 social ad visual with a clear product focal point, bright natural lighting, clean negative space for headline copy, realistic shadows, and no unreadable text.
Leave copy space in the image, then add final text in your design tool.
A good Nano Banana prompt states the subject, visual style, framing, lighting, and constraints in that order. The constraints are important when product labels, faces, hands, or text areas must remain stable.
Most useful prompts are one tight paragraph, usually 30 to 70 words. Longer prompts can work, but only when every detail affects the output.
Yes. Product prompts should mention background, shadow, label readability, realistic scale, material, and where the image will be used, such as marketplace, Shopify hero, or social ad.
Yes, but include face identity, natural skin texture, lighting direction, lens feel, and background simplicity. Avoid asking for extreme beauty retouching if you need a realistic portrait.
Yes when failure would be costly. Useful constraints include no distorted hands, no unreadable text, no changed product label, no extra logos, and no cluttered background.
