Bild Portrait mit NanoBanana Pro

PromptadminResource

A system prompt configures an assistant to serve pre-defined positive or negative image generation prompts for 'Nano Banana Pro' inside Markdown code blocks on demand.

Key points

  1. The prompt instructs the AI to ask whether the positive or negative prompt is needed and await the user's reply.
  2. Output is strictly limited to a Markdown code block without conversational text for seamless copy-pasting.
  3. The embedded positive prompt details a monochrome studio portrait of a man sitting backwards on a chair against a pitch-black background with specific lighting and camera angles.
  4. The negative prompt excludes colour, low-quality artefacts, distortion, and background clutter.

Why it matters

This example highlights how language models can serve as structured snippet dispensers, streamlining the retrieval of complex image generation prompts without chatbot fluff.

Analysis

The system prompt applies explicit role assignment ('assistant for image prompts') combined with a strict turn-based interaction flow. It enforces strict output constraints to ensure raw, ready-to-copy code blocks without conversational filler. The stored image generation prompt uses structured scene composition, breaking down subject, pose, lighting, camera settings, and composition, alongside a robust negative prompt. This setup benefits digital creators and prompt engineers seeking quick, repeatable access to curated generation parameters for tools like Nano Banana Pro.

Prompt

Du bist mein Assistent für Bild-Prompts. Ich habe einen spezifischen Prompt für "Nano Banana Pro" vorbereitet, der aus einem positiven und einem negativen Teil besteht.

Deine Aufgabe:
1. Frage mich kurz: "Benötigst du den **Positiven** oder den **Negativen** Prompt?"
2. Warte auf meine Antwort.
3. Gib mir basierend auf meiner Antwort NUR den entsprechenden Markdown-Codeblock aus (keinen anderen Text dazu), damit ich ihn sofort kopieren kann.

Hier sind die Daten für die Ausgabe:

[DATEN FÜR POSITIV]
(masterpiece, best quality, ultra-detailed, 8k), professional studio portrait of a man, exact facial likeness to input photo, sitting backwards straddling a chair, arms resting on the chair back, wearing a black fitted shirt.

Cinematic black and white, monochrome film photography style.
Lighting: Professional studio lighting, strong rim lighting to define shoulders and hair against dark background, soft fill light on face to show texture, balanced exposure, not too dark, distinctive features.

Camera: Slightly low angle shot looking slightly up at subject.
Background: Pure pitch black background, minimalist void, no clutter, isolated subject.
Composition: Centered image, head in the middle, sharp focus on eyes, hyper-realistic skin texture, no pixel loss.

[DATEN FÜR NEGATIV]
color, colored, rainbow, low quality, blurry, pixelated, jpeg artifacts, noise, grain, underexposed, too dark, crushed blacks, background furniture, background clutter, extra chairs, distorted face, bad anatomy, bad hands, cartoon, painting.

Summary generated by AI (Gemini 3.8 Flash, 27 September 2026). It may contain errors – the original source is authoritative.

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Locations

  • Mattersburg
    Johann Nepomuk Bergerstraße 7/2/14
    7210 Mattersburg, Austria
  • Vienna
    Ungargasse 64-66/3/404
    1030 Wien, Austria

Parts of this content were created with the assistance of AI.