# GPT Image Hub prompt

## Mounted Butterfly Specimen Selective Iridescence Comparison
- URL: https://www.gptimagehub.com/library/mounted-butterfly-specimen-selective-iridescence-comparison
- Generator URL: https://www.gptimagehub.com/generate?promptId=oss-ym-mm-9637
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Flibrary%2Fmounted-butterfly-specimen-selective-iridescence-comparison
- Category: Poster & Illustration
- Model: nanobanana2
- Aspect ratio: 4:3
- Style: illustration
- Tags: butterfly, entomology, specimen, macro, scientific-illustration, iridescent
- Updated: 2026-10-27T22:34:23.098Z
- Created: 2026-10-27T22:34:23.098Z

Generates a scientific side-by-side comparison of a butterfly specimen with selective iridescence and matte textures. Customize the butterfly species and wing color brackets.

### Full prompt
```text
Scientific specimen illustration comparing the dorsal and ventral sides of a mounted male [Atrophaneura alcinous] spring form butterfly against a clean white background. A split comparison displays the left wing with vibrant iridescent structural color and selective shimmering highlights, while the right wing displays a completely non-reflective, flat [matte brown] texture without any gloss. Macro entomology photography, sharp focus on wing scales and fine venation, balanced studio lighting.
```