NanoBanana User Guide
Is Nano Banana Pro (Gemini 3 Pro) a low-level vision all-rounder?
People often summarize Nano Banana Pro (Gemini 3 Pro) as “stronger low-level vision”. But what does that actually mean—and is it truly an all-rounder? This nanobanana tutorial breaks it down into actionable criteria: structure, detail, materials, lighting, text, and consistency, plus prompt patterns to make results more stable.

1) What “low-level vision” means
Think of it as how well the model follows real visual rules:
- Clean edges and contours
- Realistic materials and textures
- Consistent lighting direction and shadows
- Correct structure (hands, perspective, occlusion)
2) Five dimensions to judge “all-rounder”
| Dimension | What you observe | Prompting tip |
|---|---|---|
| Structure | correct perspective, natural connections | specify camera and “correct perspective” |
| Detail | crisp texture, clean boundaries | name materials + “high detail” |
| Lighting | coherent highlights/shadows | specify key light + “consistent lighting” |
| Text | readable labels and hierarchy | keep text short + define placement |
| Consistency | same character/product across images | write invariants: “do not change …” |
3) Common strengths: product visuals and materials
Product prompt template:
[product], studio photography, softbox lighting, clean background, subtle shadow, realistic materials, high detail, 4K, ratio 1:1
4) Common limits (plan for iteration)
- Long paragraphs of text: use short headlines, do layout afterwards
- Many characters/actions: split into separate shots
- Strict multi-scene consistency: reduce randomness, keep camera + lighting stable
5) Recommended workflow
- Fix aspect ratio
- Fix style
- Generate 4 direction drafts
- Lock invariants (identity/product, lighting direction)
- Iterate one variable per round
NanoBanana entry
https://app.nanobanana3.top/generate/image-tools/nano