Nano Banana Prompt: Complete Guide to Writing Better Image Prompts

Whether you're crafting a nano banana prompt or any other image generation request, a good prompt is descriptive and clear, and makes use of meaningful keywords and modifiers. Start by thinking of your subject, context, and style.

1. Subject

The first thing to think about with any prompt is the subject: the object, person, animal, or scenery you want an image of.

2. Context and Background

Just as important is the background or context in which the subject will be placed. Try placing your subject in a variety of backgrounds—studio with white background, outdoors, or indoor environments.

3. Style

Finally, add the style of image you want. Styles can be general (painting, photograph, sketches) or very specific (pastel painting, charcoal drawing, isometric 3D). You can also combine styles.

What is a Nano Banana Prompt?

A nano banana prompt is a concise, highly specific prompt that focuses on a single, well-defined subject with minimal but precise details. The term "nano banana" refers to creating prompts that are both extremely detailed (nano-level precision) and focused on a specific subject (like a banana). This technique helps you generate more accurate and consistent results by being precise rather than verbose.

Example of a nano banana prompt:

A single yellow banana, macro photography, 100mm lens, studio lighting, clean white background, sharp focus, natural texture

The key to a successful nano banana prompt is balancing specificity with brevity—every word should serve a purpose.

Iterative Prompt Refinement

Start with a basic prompt and refine it by adding more details. This approach works whether you're creating a nano banana prompt or a more complex scene:

Short prompt:

A park in the spring next to a lake

Medium prompt (adds lighting/time):

A park in the spring next to a lake, the sun sets across the lake, golden hour

Long prompt (adds specific details):

A park in the spring next to a lake, the sun sets across the lake, golden hour, red wildflowers

Nano banana prompt approach (focused and precise):

A single yellow banana, macro photography, 100mm lens, studio lighting, clean white background, sharp focus, natural texture

Notice how the nano banana prompt technique keeps the description focused and specific, making it easier for AI to generate exactly what you want.

Photography-Specific Prompts

For photorealistic results, include camera and lens specifications. The nano banana prompt technique works exceptionally well for photography prompts, as it emphasizes technical precision and specific details:

Portrait Photography

Use case: Headshots, portraits, close-ups
Lens type: Prime
Focal lengths: 50mm, 85mm, 105mm
Additional details: Shallow depth of field, soft lighting, natural skin tones

Example prompt:

Close-up photo of a woman in her 20s, street photography, movie still, muted orange warm tones, 85mm lens, shallow depth of field

Object Photography

Use case: Product shots, still life, macro
Lens type: Macro
Focal lengths: 60mm, 100mm
Additional details: Controlled lighting, sharp focus, clean background

Example prompts:

Nano banana prompt (perfect for object photography):

A single yellow banana, macro lens, 100mm, studio lighting, sharp focus, clean white background, natural texture, photorealistic

Leaf macro:

Leaf of a prayer plant, macro lens, 60mm, studio lighting, sharp focus, clean white background

Food photography:

A plate of pasta, 100mm Macro lens, natural window light, shallow depth of field, appetizing presentation

Motion Photography

Use case: Sports, wildlife (motion)
Lens type: Telephoto zoom
Focal lengths: 100-400mm
Additional details: Fast shutter speed, action or movement tracking

Example prompts:

Sports:

A winning touchdown, fast shutter speed, movement tracking, telephoto lens, dramatic action shot

Wildlife:

A deer running in the forest, fast shutter speed, movement tracking, 200mm lens, natural lighting

Wide-Angle Photography

Use case: Astronomical, landscape (wide-angle)
Lens type: Wide-angle
Focal lengths: 10-24mm
Additional details: Long exposure times, sharp focus, smooth water or clouds

Example prompts:

Landscape:

An expansive mountain range, landscape wide angle 10mm, golden hour, long exposure, sharp focus throughout

Astro photography:

A photo of the moon, astro photography, wide angle 10mm, long exposure, starry sky background

Best Practices

1. Start Simple: Begin with a basic description of your subject, then add details iteratively. This is especially effective when using the nano banana prompt technique.

2. Be Specific: Use concrete details rather than vague adjectives. The nano banana prompt approach emphasizes precision over verbosity. For example:

   • ✅ "soft rim light, warm tones, 85mm portrait"
   • ❌ "beautiful, epic"

3. Include Technical Details: For photorealistic images, specify:

   • Camera lens (e.g., 50mm, 85mm, 24mm)
   • Lighting conditions (golden hour, studio lighting, natural light)
   • Composition (close-up, wide shot, rule of thirds)

   These technical details are essential in a nano banana prompt to ensure accuracy.

4. Iterate Systematically: Don't try to fix everything at once:

   1. Subject + composition → confirm pose/crop
   2. Style/medium → lock the overall look
   3. Lighting/color → tune the mood
   4. Negatives → remove recurring artifacts

5. Master the Nano Banana Prompt: When you need precise, focused results, use the nano banana prompt technique—keep it concise, specific, and technically detailed.

Example Prompts

Nano Banana Prompt Example

Here's a perfect example of a nano banana prompt that demonstrates precision and focus:

A single yellow banana, macro photography, 100mm lens, studio lighting,
clean white background, sharp focus, natural texture, photorealistic,
subtle natural curve, professional product shot.
Negative: text, watermark, multiple bananas, bruises, artificial colors, shadows.

This nano banana prompt is effective because it:

• Focuses on a single, well-defined subject
• Includes specific technical details (100mm lens, macro photography)
• Specifies lighting and background
• Uses negative prompts to exclude unwanted elements

Product Photography

Matte black wireless earbuds on a white acrylic block, close-up, studio product photo,
softbox lighting, high-key background, subtle reflection on surface, crisp edges, 50mm lens.
Negative: text, watermark, logo, harsh shadow, glare, fingerprints, dirt.

Editorial Portrait

Half-body portrait of a young woman in a tan trench coat, wind in hair,
editorial photo, golden hour backlight, warm tones, shallow depth of field, 85mm lens.
Negative: text, watermark, extra limbs, distortion, duplicate subjects.

Architectural Exterior

Modern concrete house on a hillside, wide shot, overcast sky, soft diffused light,
photorealistic, detailed textures, 24mm lens.
Negative: text, logo, people, cars, motion blur, blown highlights.

Food Photography

Fresh croissant with butter on a white plate, top-down composition,
natural window light, soft shadows, photorealistic, crisp flaky layers.
Negative: text, watermark, messy crumbs, plastic shine, harsh reflections.