Slit-Scan Photographs Make For Psychedelic Photo Finishes

Slit-scan photography works much like a rolling shutter does -- the sensor continually collects image data but the shutter never actually closes, hence its use in determining a "photo finish" -- whatever crosses the camera's view first, appears first in the photo set. Or at least that's how its supposed to work.

Slit-scan photography is also really useful for creating psychedelic art where colours flow from a point. You can see examples of it in 2001 during the "stargate" sequence or just about every single time the USS Enterprise stretched as it entered Warp Drive in The Next Generation. But what happens when the latter effect happens during the former event? Our friends at Oobject have assembled 12 examples of these far out photo finishes.

If those photos havent got you questioning physics, check out these images of atoms, universes, and everything between; some movies about moving picture machines, and these camera cars.

Beautiful Cycling Photo Finish With Lots Of Bikes

Note how the backs of the cyclists are sometimes in an exaggerated arc as the vertical movement of them pedaling, over time is captured in a single frame.

Lunging Photo Finish In Cross Country Skiing

Note the bending of the ski poles due to vertical movement.

***Slit Scan Photo Of A Propeller That Defies Topology***

Photo by Soren Ragsdale on an iPhone.

Turntable Portrait With Slit-Scan Camera iPhone App

You can try this at home.

2001 A Space Odyssey: Unwrapping The Slit Scan Sequences

This site shows an attempt to reverse the distorting affects of slit scan images as used in the movie 2001, in order to decipher them. The results are far from conclusive but you can see some things that are less abstract.

The Closest Photo Finish Ever

A cycling Olympic gold medal by a thousandth of a second.

Sample Image From Qualisys Photofinish Camera

Beautifully abstract.

Usain Bolt 200m Gold, World Athletics Championships In Daegu

Strip Portrait -- Camera Still, Subject Rotates

Tom Dahin's Baseball Image From His DIY Strip Camera Page

Extreme Distortions Of A Photo Finish Camera

Photo Finish, Stamford Bridge Greyhound Track, 1953


    The greyhound looks like a kangaroo flying sideways :P

    I reckon that measuring a human sporting event to 1/1,000 of a second is a joke (as its too small for a human being to comprehend). The act of my reading this article took more than 360,000 thousandths of a second. Anything smaller than 1/100 of a second should be considered a tie.

      you do know that differences of 10 milliseconds are visible to someone who knows what to expect?

        And you do know that 10 milliseconds is 1/100 of a second? :-P

    Just for the record, that photo finish "for the gold medal" actually didn't matter anyway. Meares was given the victory for that heat (the first in a best of three competition) because the Brit broke a rule and was disqualified.

    The propellor isn't slit scan - it's that the iPhone uses a rolling shutter to capture, and the blade is moving faster than the roll.

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