Photo Guide

One clean photo of your iris

Get the light right and the rest is easy. Follow this and you'll have a sharp, glare-free iris shot in under a minute.

The one rule

Light from the side — never the front

Your eye is a mirror. Whatever faces it shows up on the iris — so a phone screen or a ceiling light leaves a glare blob right where we need to look. Use one small light, a lamp or your phone's flashlight, off to one side at 45° or more and slightly behind your eye-line. That lights the iris evenly with nothing reflected back.

Top, side and front views showing the lamp placed to one side of the face

Top · Side · Front — keep the light to one side, angled in

Two easy ways

Pick whichever you can

Phone held up to a mirror with a small lamp lighting the eye from one side

Phone in a mirror

Stand at a mirror and hold your phone up so you can see the screen in the reflection. Put a small lamp off to one side — never behind the phone. Frame your eye, get close, and tap to shoot.

Easiest
A friend holding a phone a few centimetres from someone's eye, lit from the side

Ask a friend

Have someone hold the phone about 2–4 cm from your open eye while a lamp lights it from one side. They can see the focus far better than you can on your own — by far the simplest way to a sharp shot.

On an iPhone

Getting the macro shot

Recent iPhones have a built-in macro lens. A little practice and the iris fills the frame, pin-sharp.

A phone moving in close to an eye until the macro lens kicks in
1

Get within about 2 cm

Move the phone slowly toward your eye. At roughly 2 cm a modern iPhone automatically switches to its macro lens and the iris snaps into crisp detail.

A finger tapping and holding on the iris on a phone screen to lock focus
2

Tap and hold on the iris

Press and hold right on the coloured part of the eye until it locks focus and exposure (you'll see “AE/AF Lock”). Now the camera stays sharp on the iris even as you move a little.

An elbow braced on a table holding the phone steady close to an eye
3

Hold very still

At this distance even a tiny wobble blurs everything. Brace your elbow, breathe out, and gently tap the shutter — or use the volume button.

A desk lamp lighting the eye from the side, with the phone held out of the beam
4

Don't block your side light

Keep the phone and your hand out of the lamp's path. If the eye looks dim on screen, you're shading it — shift the light, not the phone.

The difference

What good looks like

✓ DoA sharp, evenly lit iris filling the frame with no reflections

A clean iris shot

  • ✓Sharp — fine fibres are visible
  • ✓Evenly lit, no glare blob
  • ✓The iris fills the frame
  • ✓Nothing reflected in the eye
✕ Don'tAn iris with a bright rectangular screen reflection smeared across it

Screen reflection

The phone or a screen faced the eye head-on — the iris mirrored it as a bright streak.

✕ Don'tAn iris with a bright spot from a ceiling light in the centre

Ceiling-light spot

A light directly overhead left a glowing dot right in the middle of the iris.

✕ Don'tAn out-of-focus eye, too soft to read any iris detail

Too far / blurry

Shot from too far back or moved during the shot — the iris is soft and out of focus, not enough detail to read.

Before you shoot

Quick checklist

  • ✓Light is coming from the SIDE, not the front or overhead.
  • ✓No bright blob or reflection sitting on the iris.
  • ✓The iris fills most of the frame.
  • ✓It looks tack-sharp — you can see the fine fibres.
  • ✓Both eyes shot separately, the same way.