How to photograph your iris at home: a complete guide

Step 1 — Choose the right light

Bright, diffuse, natural light is your best option. Stand near a large window on an overcast day, or in open shade outdoors. The goal is even illumination across the eye without a harsh bright spot (specular highlight) covering the pupil or iris.

Avoid pointing the subject directly at the sun — the squint destroys the shot. If you are indoors without a window, a ring light placed slightly above and centered on the face works well, but be careful: a small ring light at close range will produce a bright ring reflection right across the iris. Diffuse the light with a sheet of white tissue paper taped over it.

The worst light is the phone's own flash. It almost always washes out the color and creates a reflection directly on the cornea. Turn it off.

Step 2 — Get close enough, but not too close

Most smartphone cameras struggle to focus below about 8–10 cm. Tapping the iris on the screen to set focus, then slowly moving the phone closer until the image sharpens, is a reliable technique. If the camera refuses to focus at all, step back to about 15 cm and use the 2× optical zoom if your phone has it — this avoids the minimum focus distance problem and gives a tighter crop without cropping digitally.

The iris should fill at least a third of the frame. If it is smaller than that, the AI that processes your photo later will have less pattern detail to work with and the result will look more generic.

Step 3 — Keep the eye wide open

Ask your subject (or yourself, using the front camera) to look slightly above the lens. This opens the eye wider, shows more of the iris below the upper eyelid, and reduces the chance the lid cuts across the pattern. Having them take a slow breath in just before you shoot often causes the lids to lift a fraction — useful for subjects who naturally have a heavier upper lid.

If you are photographing your own eye using the front camera, hold the phone at eye level or fractionally above. Tilting it down tends to make the upper lid drop.

Step 4 — Check sharpness before you use the photo

Pinch to zoom in on the iris in your camera roll before submitting. The fiber-like lines radiating from the pupil — called iris crypts and collarette — should be individually distinguishable. If the image is even slightly blurry there, take another shot. Motion blur from the subject blinking or the phone moving is the most common cause of a soft photo; using burst mode and picking the sharpest frame eliminates it.

Common mistakes to avoid

• Reflections across the pupil. A window or bright ceiling reflected in the cornea looks fine to the naked eye but shows up clearly in a close-up. Shift the angle slightly until the reflection disappears from the iris area.
• Shooting in portrait mode. Portrait/bokeh mode artificially blurs the background by estimating depth. It can blur the iris itself if the algorithm decides it is behind the eyelashes. Use standard photo mode.
• Heavy post-processing. Boosting clarity, contrast, or saturation on the photo before submitting can create halos and reduce the nuance the AI picks up on. Submit the image as close to straight-out-of-camera as possible.
• Colored contact lenses. Tinted or patterned contacts obscure the natural iris. Remove them before photographing.

Quick-reference checklist

What happens after you submit

Once you upload two iris photos to WhatEyeColor.com, the AI reads the fine structure of each iris — the radial fibers, the collarette ring, the crypts, and the color variation — and weaves both into a single circular composition. The better your source photos, the more of that personal detail survives into the final artwork. A well-lit, sharp iris photo gives the model rich material to work with; a blurry one forces it to fill in gaps with generic pattern, and the result looks less distinctively yours.

Generating takes around 30–60 seconds. The result is a high-resolution image you can download, print, and frame.