The best lens for portraits — and why focal length changes your face

By Mariya Harley · London · updated August 2026

What focal length actually does to a face

The distortion people blame on lenses is really about distance. A wide lens forces you close, and at close range the nose is proportionally much nearer the camera than the ears, so it photographs larger. A longer lens lets you stand further back, the relative distances even out, and the face returns to normal proportions.

Photograph the same person at 24mm from half a metre and at 85mm from two metres and you will produce two apparently different faces. Nothing changed but where you stood.

The practical ladder

• 35mm — environmental portraits, showing the person in their space. Do not use it close for a headshot.
• 50mm — the flexible one. Full length to waist up, and it is affordable in a fast aperture.
• 85mm — the classic. Head and shoulders with a beautifully soft background, at a distance where you can still talk normally.
• 135mm — the most flattering compression, but you need a large space and you will be shouting.

Aperture matters less than people think

f/1.2 lenses are seductive and mostly used at f/2 anyway, because at f/1.2 the depth of field on a face is a few centimetres — one eye is sharp and the other is not. An f/1.8 lens used at f/2.8 produces the look most people actually want, at a fraction of the price.

On a crop sensor

Multiply by roughly 1.5: a 56mm on APS-C behaves like an 85mm, and a 35mm behaves like a 50mm. Manufacturers build lenses at those focal lengths for exactly this reason.

And on a phone

Use the 2x or 3x camera rather than the default wide, and step back. The telephoto module on a current phone is roughly a 50–75mm equivalent, which is a genuine portrait focal length.