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Ghost Crosssing

Discussion in 'Street-City-Architecture' started by Vikman, Jan 12, 2018.

  1. Vikman

    Vikman Premium Member

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    I took this photo at night and was surprised at the result. Can someone explain how I got the ghost-like image of the people in the crosswalk? Specifically, why the strobe-like effect?
    Fuji X-T2, 18-55mm @ 23mm, f/4.5, 2.5 sec, mounted on tripod, no flash, no flickering lights in the area.

    Ghost Crossing.jpg
     
    Last edited: Jan 12, 2018
    Minigill, DaveX, Robmas4229 and 2 others like this.
  2. JohnX

    JohnX Premium Member

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    2.5sec exposure.
     
  3. Dirk Offringa

    Dirk Offringa Premium Member

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    2.5 exposure. When a human walks, the mouvement isn't linear. At one point the legs are almost at zero velocity. Those are the moments you see exposed.
     
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  4. bcirwin

    bcirwin Premium Member

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    I like the result.
     
  5. mikEm13

    mikEm13 Premium Member

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    This just proves were not alone..........
     
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  6. Robmas4229

    Robmas4229 Premium Member

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    Cool image.
     
    Last edited: Jan 13, 2018
  7. Vikman

    Vikman Premium Member

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    Yup... my feeling exactly! We're not alone ;)
     
  8. Vikman

    Vikman Premium Member

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    I think you are correct. If you notice where the ghost image is, it's near the "walk-don't walk" light on the street signal. The don't walk sign flashes in about the same cadence as a person's footsteps. That, combined with Dirk's input is the likely explanation. BTW - I kind of like the image. Thanks to those who took the time to agree or to input their comments.
     
  9. Fly_Boy

    Fly_Boy Premium Member

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    I think Dirk has the right answer, the legs were almost motionless during part of the stride. The legs of the pedestrians were lit by the headlight of a car waiting for the people to cross. You can see the reflection of the car in the dark window on the right.
     
    Dirk Offringa and Barry Cross like this.
  10. Arjay

    Arjay Admin Staff Member

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    In a time exposure, as people walk, their feet rest on the ground and don't move while the rest of the body constantly is in motion. That's why only the feet are sharp while everything else of the walking people is blurred.

    Very cool shot BTW.
     
  11. DaveX

    DaveX Premium Member

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    Very cool shot, I did one once as some one walked past a church so called it ghost walker :)
     
  12. jknights

    jknights Moderator Staff Member

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    Nice shot.
    Explanation by Dirk is the right one I think.
     
  13. Vikman

    Vikman Premium Member

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    Thanks Arjay and others. I'd comment more, but I'm off in pursuit of more ghosts;)
     

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