Why Your Phone Makes Your Nose Look Bigger

Take a photo of your face at arm's length and the nose comes out larger, the ears smaller, and the whole face slightly rounded. Step back and take the same photo zoomed in, and the proportions correct themselves.

Nothing about the camera changed. What changed was the distance.

Why distance does this

The nearer the lens, the larger the difference in distance between the parts of your face closest to it and those furthest away. At 30 cm, your nose might be 25 cm from the lens and your ears 35 cm — a 40 percent difference, and the nose is rendered proportionally larger.

At 150 cm the same 10 cm difference is under 7 percent, and the face is recorded close to how it looks in person.

This is why portrait photographers stand back and use a longer lens rather than stepping in. It has nothing to do with the lens being "flattering" and everything to do with the geometry of distance.

What it costs you in a passport photo

Two things, and both matter for acceptance rather than vanity.

Head height measures wrong. The requirement is chin to the top of the head, as a proportion of the frame. Distortion changes that proportion in a way an automated check can flag while the photo looks fine to you.

Facial comparison fails. Border systems compare the photo to your face and to previous photos. A distorted image can fall outside the tolerance, which is a rejection you will not see coming because the photo looks perfectly normal.

The fix

Set the phone down at about a metre and a half, use the back camera, and use the timer or a voice shutter. If the head is small in the frame, crop afterwards rather than moving closer. Cropping a 12-megapixel photo down to passport size leaves far more resolution than you need.

Do not use the phone's digital zoom to fill the frame from further away. That crops in software and loses detail, which is the same as cropping afterwards but with less control.

The other phone-specific faults

Portrait mode. It blurs the background artificially, and every authority requires a plain, sharp background. Turn it off.

Beauty filters and skin smoothing. Some phones apply these by default in the front camera. A photo that does not match your face is refused, and this is one of the more common causes of a rejection people cannot explain.

Wide-angle lens. Most phones have several lenses and default to a wide one. Use the standard or telephoto lens, which sit closer to the geometry a portrait wants.

HDR. Usually helpful, occasionally not — it can flatten the face and lift shadows in a way that removes the definition a checker looks for. If the result looks oddly flat, retake with it off.

Getting the framing right afterwards

Once you have a properly-taken photo, sizing it is arithmetic rather than photography. The analysis board on this site crops to the country you need with the head height positioned correctly, which is the part that is tedious to do by hand and the part most home photos get wrong.

Testing whether yours is distorted

Take two photos, one at arm's length and one from a metre and a half away cropped to the same framing, and put them side by side. The difference is obvious once seen, and it is larger than most people expect.

If you only have the close one and cannot retake, it is worth retaking. Distortion cannot be corrected afterwards in any way that preserves the measurements a checker takes.