Bring your world
Add a photo or start with our garden. Everything is processed on this device.
✳ YOUR POCKET-SIZED PERSPECTIVE STUDIO
Same world.
Different eyes.
Borrow a point of view. Keep a little wonder.
Your photo, thoughtfully reimagined — right on your device.
A butterfly-inspired color study
Ready to explore
Original
Butterfly study
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ANIMAL-INSPIRED STUDY
A butterfly daydream
✳ A new perspective, same photo.
JPEG, PNG or WebP · up to 20 MB · export up to 4096 px / 12 MP
THE LITTLE FIELD GUIDEA little less guessing.
A little less guessing.
A little more understanding.
Two worlds to explore. Three little steps to get there.
Choose your perspective
Explore eye conditions and visual differences, or try animal-inspired studies. Neither is an exact view.
Compare, then keep
Slide the divider or hold the original. Adjust the amount, then save a PNG without changing the framing.
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A tiny shortcut: paste a copied image on desktop. Use arrow keys on sliders. Sounds are optional.
THE HUMAN VISION HANDBOOK
10 visual studiesMeet the differences.
These cards explain the 10 human studies. Some are conditions; others describe a visual change, not a diagnosis.
For learning, not self-diagnosis.
This guide and its effects are educational approximations, not medical advice. They cannot tell you what a person sees or test your eyes. If you are concerned about your vision, speak with an eye-care professional.
Plain-language background: NEI · color visionNEI · focus & refractionNEI · cataractsNEI · low vision
Curiosity, with a little care.
Human vision varies from person to person. These simplified effects illustrate selected features, not the full experience of a condition. They cannot test or diagnose your eyesight.
Animal modes are playful visual studies, not validated simulations. A normal photo has no ultraviolet or infrared data. Your screen cannot show new colors, wider fields of view, or the way another brain perceives a scene.
Focus, light, movement and depth all matter. These flat-image effects keep the original composition; they cannot recreate missing details or reveal unseen wavelengths.
A peek behind the effects
Human protan/deutan/tritan modes use the published Machado, Oliveira & Fernandes (2009) matrices, with interpolation between 11 model levels. sRGB is linearized before color mixing and optical averaging, then encoded back for display. This is a display approximation, not a clinical test. The amount slider changes a model parameter, not your prescription. Spatial effects use normalized blur, directional spread, image-derived highlight bloom or feathered field shading. These remain illustrative: there is no depth map, spectral data or personalized eye model. Dog, cat and horse colors use a human deutan matrix as a clearly labeled dichromacy proxy, not a species-calibrated model. Bee and butterfly modes are explicitly illustrative; they do not reveal UV. “Eagle” is restrained detail emphasis, not extra visual acuity.
Model reference: Machado et al. (2009), matrices & tutorial. Learn more: National Eye Institute: color vision · Natural History Museum: animal vision · ACVO: vision in pets