The registrar always looks slightly confused. Granny never quite understands what's going on. The venue coordinator, who has managed five hundred wedding photographers, can't figure out why nothing appears to be happening and yet something clearly is.

They're all ahead of themselves. Wait for the photographs.

I've been a photographer for over twenty years. East Berlin, Mumbai, New York, Rome. The BBC, MTV, Jaguar. Work that teaches you one thing above everything else: see where the great image is going to be. Before it gets there. Read the room. Read the light. Know three seconds before everyone else where to stand.

That eye doesn't switch off at a wedding.

Here's what it looks like in practice.

I'm watching the room while everyone else is watching the couple. The father composing himself outside a closed door. The old friends who haven't properly talked in years, suddenly unable to stop. The grandmother watching the first dance, thinking about her own. The naughty table (every wedding has one) doing exactly what it always does, three feet from the speeches, completely unrepentant.

Here's something worth knowing upfront: you're not going to have to perform.

Not because I've found a way to make it comfortable (though you will be) but because when a day is built around real choices, and the right people, and the evening you actually wanted, something else happens entirely. The venue is doing what you knew it would do. The band is doing what you hired them for. The people around you are exactly the right people. No space left for self-consciousness. Too much going on.

A wedding isn't a list of scenes to be performed. It's a living thing. The couples who understand that, who build a day around who they are rather than what a wedding is supposed to look like, arrive at the morning of it and find there's simply nothing left to manage. The day takes over. And that's when the photographs find themselves.

There will be family photographs: quickly, painlessly, done before you've registered they happened, and at least one of them will be the version that ends up on someone's wall. Everything else will feel less like a performance and more like your actual wedding. Which, when you think about it, is what it is.

The coordinator will figure this out as the day goes on. The registrar will quietly recalibrate. Granny will be ahead of both of them.

Within five minutes in front of the camera, every couple feels like they were born for this. They never know why. I know why. The day they built is doing the work.

The photographs that come out of it don't look like wedding photographs. They look like stills from the best film you never saw. Shot on the best day of their lives. By someone who wasn't supposed to be watching.

Granny loves them. Even if she still can't explain what the photographer was doing.