Nano Banana Pro: A Practical Prompt Guide for Precise Images
A structured prompt framework for nanobananapro: subject, scene, style, camera, lighting, and constraints—so you can generate more accurate, controllable images with better consistency.
March 25, 2026
Why prompts determine your output ceiling
In Nano Banana Pro (nanobananapro), prompts work best as executable instructions, not keyword piles. A good prompt tells the model:
- What to generate (subject / action / relationship)
- Where it happens (scene / time / mood)
- How it should look (style / material / color / lighting)
- What must not happen (constraints / exclusions)
Clear prompts reduce randomness, improve consistency, and cut rework.
The 6-layer prompt structure (save this)
Use this order for repeatable, precise results:
| Layer | What to write | Example |
|---|---|---|
| 1. Subject | who/what + identifying traits | “a short-haired Asian woman with silver earrings” |
| 2. Action | what is happening | “reading by the window, latte on the table” |
| 3. Scene | place / time / mood | “rainy café, neon reflections on glass” |
| 4. Style | realistic / illustration / cinematic | “cinematic photorealism, light film grain” |
| 5. Camera & light | framing / focal length / light direction | “50mm, medium shot, rim light, soft shadows” |
| 6. Constraints | what to avoid / must-haves | “no watermark, no extra fingers, clean background” |
Treat it like a template—swap subject/scene/style without breaking consistency.
Turn vague adjectives into checkable requirements
Instead of “premium / beautiful / clean”, write things you can verify:
- “premium” → materials + palette + lighting (matte metal, low saturation, soft side light)
- “detailed” → texture requirements (natural skin texture, crisp fabric folds, clean edges)
- “clean” → background constraints (solid background, minimal props, no text)
Write constraints to prevent failures
Put short “do-not” items at the end:
- no extra limbs or fingers
- no text / watermark / logo
- avoid blur / overexposure / ghosting
- high resolution, clean edges
Example prompt you can reuse
A short-haired Asian woman in a beige trench coat, reading by the window in a rainy café. A latte and a notebook are on the table. Neon reflections appear on the window. Cinematic photorealism, light film grain, low saturation with rich tone. 50mm lens, medium shot, rim light, soft shadows, natural skin tone, crisp fabric texture. No watermark, no extra fingers, no messy background, high detail and clean edges.
Image example (structured prompts improve stability)
Use cases: how to adapt prompts
E-commerce product shots
- Specify material + lighting (softbox, top light, reflections)
- Specify background (solid / gradient) + whitespace for copy
- Add constraints (no text, clean edges)
Stylized portraits
- Lock identity (face traits, hairstyle, expression)
- Keep camera consistent (focal length, framing, light direction)
Visual knowledge cards
Generate a clean base image with whitespace, then add text in a design tool for best reliability.