THE TECHNICAL DEFINITION AND WHY IT'S INSUFFICIENT
A long take is a shot held longer than conventional editing would hold it. That is the technical definition and it tells you almost nothing about why it matters. What matters is what a long take does that a cut cannot do - and why filmmakers who use it, use it at the specific moments they choose.
The average shot length in a contemporary Hollywood film is between two and four seconds. A long take might be thirty seconds, two minutes, or in the case of Aleksandr Sokurov's Russian Ark, ninety-six minutes - the entire film in a single continuous shot. The technique covers that entire range, and what it does at each point in the range is meaningfully different.
WHAT A LONG TAKE DOES THAT A CUT CANNOT
A cut resets. It gives the viewer a new frame of reference, new visual information, a new point of entry into the scene. Editing is editorial control: the director shows you what matters, when it matters, in the order that produces the intended effect. The viewer follows the edit.
A long take gives up that control. The shot continues whether the composition is optimal or not. The performance must sustain - actors can't rely on a different take being cut together with this one, because this one is the only take there is, and it runs from beginning to end. The world inside the frame continues without editorial management. The viewer is no longer being led through the scene; they are in the duration of the scene, experiencing time alongside the characters rather than through a curated selection of its most significant moments.
This is what the long take produces that cutting cannot: the sense of real time as a felt experience. The tension or boredom or anxiety of waiting, in real time, for something to happen. The specific weight of a conversation that has been going on longer than anyone wanted it to. The breathlessness of action that doesn't stop for a cut to acknowledge how breathless it is.
THE LONG TAKE AS FORMAL ARGUMENT
Filmmakers don't use long takes for their own sake - not the good ones. The long take is chosen when real time is the argument. When the duration is what the film needs the viewer to feel, not just understand.
Orson Welles opens Touch of Evil (1958) with a three-minute-plus continuous shot that begins on a bomb being planted in a car and follows the car through a Mexican border town to the moment it explodes. The shot functions as a demonstration of formal control - Welles announcing, at the beginning of a film about the difference between legality and justice, that he can hold a shot longer than you expect, and that holding it creates a specific anxiety in the viewer that cutting would release. The bomb is in the audience's knowledge from the first ten seconds. The long take is the mechanism for keeping it there for three minutes.
Alfonso Cuarón uses a long take in the hospital siege sequence of Children of Men (2006) differently. The shot runs approximately four minutes and tracks Clive Owen's character through a battle zone, the camera moving as though handheld documentary, with smoke and blood and chaos unmanaged by editing. The effect is immersion rather than anxiety - you are in this, not watching it. The long take makes the chaos feel uncontrolled in a way edited action sequences, however technically accomplished, do not.
THE GREATEST LONG TAKES IN CINEMA
The opening of Gravity (Cuarón, 2013): Thirteen minutes in space, the camera moving through a debris field in a single continuous shot. Cuarón made Children of Men's hospital sequence, then made this. The formal argument is about the indifference of space - the shot runs and runs, there's nowhere to cut to, the danger doesn't pause for the edit.
The corridor fight in Oldboy (Park Chan-wook, 2003): Two and a half minutes. Oh Dae-su fighting his way through a corridor of men, visibly exhausted, getting slower, still winning. The shot is horizontal - the corridor is the whole frame - and it runs until it's finished rather than cutting when the choreography peaks. The exhaustion is the point. Cutting when the action was most photogenic would have made it exciting. Refusing to cut makes it desperate.
The Copacabana sequence in Goodfellas (Scorsese, 1990): Three minutes following Henry Hill through the back entrance of the Copa, through the kitchen, through the crowd, to a table that materialises because he's Henry Hill. The long take here is the formal argument about seduction - we're being shown glamour without a cut that would break the spell. The camera follows Henry; we follow the camera; we're seduced by the same thing Henry's seduced by.
Russian Ark (Sokurov, 2002): The entire film. Ninety-six minutes through the Hermitage Museum in a single continuous shot, three hundred years of Russian history condensed into one unbroken take. A stunt and a formal argument simultaneously - about Russian cultural continuity, about the preservation project, about what it means to move through a space where everything has happened.
THE LONG TAKE AND PERFORMANCE
One underrated consequence of the long take is what it does to acting. When a scene is shot in one take, the performance must sustain its own internal logic without the safety net of editing - there is no shot at a different angle to cut to if the actor's timing is slightly off, no reaction shot to paper over a missed beat. What the long take demands is real continuity of performance. What it reveals is whether the actor actually lives inside the character or manages the character from outside.
Birdman (Iñárritu, 2014) is constructed to look like a single continuous take, and while it's technically assembled from multiple long takes invisibly joined, the effect on the performances is the same: Michael Keaton, Edward Norton, Emma Stone are in scenes that run uninterrupted for ten, fifteen minutes at a time. The performances are exposed in a way edited films don't expose them. You see actors think.
The long take is chosen when real time is the argument.