How to Write Nano Banana Pro Prompts That Actually Work
After a lot of testing, here’s what consistently helps Gemini AI photo prompts perform better:
1. Be painfully specific about what matters
Bad:
“Make the lighting nice.”
Better:
“5600K daylight, key light from upper left at a 45° angle, soft fill at 30% intensity from the right.”
Nano Banana Pro understands technical language. Use it.2. Brief it like a professional
- A reliable structure for any Gemini AI prompt:Subject – What are we looking at?
- Environment – Where is it? Time of day? Mood?
- Technical details – Camera, resolution, aspect ratio, colors
- Constraints – What must stay the same (face, product, text, layout)?
- Output – How many images, for which use?
When you structure prompts like this, you’re basically writing a mini creative brief.
3. Use “Search the web” for live or factual data
Whenever you need current prices, weather, events, or stats, make sure you say something like:
“Search the web for [X], then…”
That encourages Pro to ground the image in reality instead of guessing.4. Upload reference images with intent
Rough guideline:1–3 images: style or object transfer
4–7 images: complex scenes & compositions
8–14 images: consistency across a series or full mood boards
More images isn’t always better. Pick references that show exactly what you want: lighting, materials, angles, etc.5. Always specify resolution & aspect ratio
If you don’t, you’ll usually get a generic ~1K square that’s fine for tests but useless for:Print (menus, posters, packaging)
Slides & key art
High-end web design
Examples that work well:“4K, 16:9, presentation slide”“300 DPI, 24×36 inch poster”
“Square 1:1, 2000×2000 for Instagram”
6. Be very specific about text
Text is one of Nano Banana Pro’s biggest strengths but only if you tell it what you care about:Fonts & hierarchy: “Bold sans serif headline 2× body size, centered top third.”
Language: “All text in Japanese with proper kanji and kana.”
Placement: “No text crossing faces or important objects.”
Common Nano Banana Pro Mistakes (and Fixes)
When to Use Nano Banana vs Nano Banana Pro in Gemini
Use Fast (regular Nano Banana) when:
- You’re just brainstorming or moodboarding
- You’re making quick memes / social posts
- You care more about speed than pixel-perfect results
- You want to save Pro credits
Use Pro (Nano Banana Pro) when:
- You have clients or stakeholders
- You need 4K or print-ready assets
- There’s important text involved
- You need multi-image consistency (faces, products, styles)
- Technical accuracy matters (diagrams, data viz, UI, dashboards)