PHOTO EXPERIMENTAL · CONTEMPORARY · INTERNATIONAL

Slit Scan Stretched Time Photo

Slit-scan time-stretched photography. One-pixel column captured across many moments, time becomes a spatial axis, smear-streak abstraction.

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slit-scantime-artabstractionstreaked

LUT slit-scan-stretch

WHEN TO USE

Motion and sports content where visualizing the precise moment of crossing or transformation is conceptually central
Music video or experimental film where temporal distortion and stretched time match the sonic or narrative territory
Documentary or portrait work exploring movement, change, or the passage of time as a subject
Abstract or generative video content where mathematical time-sampling produces compositionally beautiful results
Science communication content where slit-scan reveals phenomena invisible to normal frame capture - crowd flow, wave propagation, machine motion
Title sequences or brand identity work requiring dynamic, technically distinctive visual signatures

WHEN NOT TO USE

Documentary journalism where temporal distortion could be interpreted as editorial manipulation of events
Product photography where the stretched, smeared aesthetic obscures the product's form and detail
Casual social content where the technical complexity of the effect reads as gratuitous rather than meaningful

SIGNATURE TECHNIQUES

How the look is made.

The moves a human crew would use to get here. Cue applies them for you, and knowing their names is how you ask for a change.

01
Temporal streak of moving subjects
Moving subjects during the scan period appear as stretched ribbons - the length of the streak proportional to speed relative to scan rate.
02
Stationary subject normal rendering
Elements that are completely still during the entire scan duration reproduce normally, creating the juxtaposition of frozen architecture and flowing figures.
03
Finish-line multiple-body composite
In race photography, multiple athletes crossing at different times appear in the same image as side-by-side bodies, each photographed at their own finish instant.
04
Chromatic time-smear
Color changes during a scan (light shifting, objects moving) produce horizontal color banding that represents temporal color events.
05
Scan rate modulation
Varying the scan speed during capture produces sections of extreme stretch and compression in the same image.
06
Vertical versus horizontal orientation
Horizontal slit scanning captures spatial width over time (the typical landscape mode); vertical slit produces temporal ribbons along the image height.
07
Retrograde motion reversal
Subjects moving in the same direction as the scan at exactly scan speed appear frozen; subjects moving opposite to scan speed appear doubly compressed.

HISTORY & CONTEXT

Where it comes from.

Slit-Scan - Stretched Time Photography

Slit-scan photography captures time across a single spatial dimension, producing images where the horizontal axis represents space and the vertical axis (or the other way) represents time. A narrow slit aperture scans across the scene, building the image strip by strip - subjects that move during the scan appear stretched, compressed, or multiplied; stationary elements appear normal. The result reveals temporal events invisible to the normal frame.

The Starggate: Douglas Trumbull and 2001

The most culturally significant slit-scan moment is the Stargate sequence in Stanley Kubrick's 2001: A Space Odyssey (1968). Effects supervisor Douglas Trumbull developed the specific technique by mounting a camera on a rail and moving it toward a slit backlit by colored artwork on a rostrum frame, with long exposures capturing the approaching slit as a smeared, streaking tunnel of light. The technique took nearly a year to perfect and approximately seven months to shoot. Trumbull later patented variations and used them in Close Encounters of the Third Kind (1977), Star Trek: The Motion Picture (1979), and Blade Runner (1982).

Marathon Photography and Sports Finish-Line Imaging

Slit-scan has a completely separate practical application in race finish-line photography, used continuously since the 1940s. A camera positioned at the finish line with a vertical slit aperture records a continuous horizontal strip as athletes cross - the image shows every competitor at the instant they crossed the exact finish line, with their bodies stretching or compressing based on their speed relative to the scan rate. This produces the authoritative finish photograph used in Olympic events, horse racing, and cycling.

Joon Yong Park's Train series (2009) applied the race finish-line principle to street photography, scanning moving trains and pedestrians to produce dreamlike ribbon-images where bodies become fluid streaks and architecture holds still. Andy Davies' ScanCamera app (2001-era concept, widely implemented on iPhone from ~2009) made slit-scan available to anyone with a mobile phone.

The Temporal Ribbon

Contemporary slit-scan applications include panoramic photography scanners repurposed for temporal capture (Noblex rotating cameras), custom Processing/openFrameworks implementations, and commercial After Effects plugins. Ryoji Ikeda's data.matrix and test pattern works use mathematically derived slit-scan principles at monumental scale. Instagram and TikTok effects including the "time slice" filter popularized the look to billions of users.

NOTABLE WORKS

Where you have seen it.

Stargate sequence, 2001: A Space Odyssey

Douglas Trumbull / Stanley Kubrick · 1968

Definitive slit-scan motion picture sequence, produced over seven months of shooting and defining the technique for film effects

Close Encounters of the Third Kind light effects

Douglas Trumbull · 1977

Extended application of slit-scan principles to UFO light sequences, second major film use of the technique

Olympic 100m finish photographs

various / Athletics governing bodies · 1948-present

Continuous application of slit-scan finish-line photography to determine race outcomes at fractions of milliseconds

Train series

Joon Yong Park · 2009

Fine art street slit-scan work using transit photography to produce temporal ribbon images of urban movement

test pattern series

Ryoji Ikeda · 2006-present

Monumental gallery installations using data-driven slit-scan principles at billboard scale for Japanese electronic artist

EyeEm / Instagram time-slice effects

various app developers · 2015-present

Mobile implementation of slit-scan principles bringing temporal ribbon photography to consumer social media platforms

THE RECIPE

The exact knobs
the renderer turns.

A Look is not a filter. It is a set of stored decisions the pipeline reads before it makes a single frame, so two videos in the same Look actually match.

SettingValue

GradeColour LUT applied to every frame

slit-scan-stretch

TransitionHow one shot becomes the next

soft cuts · 500ms · ease-in-out

Ken BurnsCamera move applied to stills

Slow push · 0.04 · center

TypographyDisplay / body / mono pairing

Inter · Inter · JetBrains Mono

Music moodWhat the bed under the voice sounds like

ambient-pad · time-stretched-drone

Prompt suffixAppended to every shot prompt in this Look