1. Cassi O

    Cassi O New Member

    This is my first IR image taken with my new camera of the Chicago Skyline form Indiana Dunes 33 miles away. Call it raw data if you like, but it really falls under the category of art.

     
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  2. Steve S

    Steve S New Member

    Nice Photo!

    Any idea how much of the buildings are below the horizon?
     
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  3. Mick West

    Mick West Administrator Staff Member

    From this shot:
    Metabunk 2019-07-15 07-26-55.

    Slide to compare:
    Metabunk 2019-07-15 07-39-26. Metabunk 2019-07-15 07-40-17.
     
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  4. Cassi O

    Cassi O New Member

    Mick, That slide compare is a neat trick, thanks for creating it.

    To get an idea how far away I was from the skyline, these picture were taken with my camera phone.

    IMG_20190708_104705416.

    IMG_20190708_104641227_HDR.
     
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  5. Amber Robot

    Amber Robot Member

    Can you give more specifics? Height from which you took photo and camera configuration (primarily focal length)?
     
  6. Mick West

    Mick West Administrator Staff Member

    See attached Google Earth File
    Metabunk 2019-07-15 21-22-05.
    Metabunk 2019-07-15 21-23-14.
     

    Attached Files:

  7. Mick West

    Mick West Administrator Staff Member

    Seems to be about 100 feet above the water.
    Why would focal length be useful here?
     
  8. Mick West

    Mick West Administrator Staff Member

    ScreenFlow.
    View from differing altitudes.
     
  9. Cassi O

    Cassi O New Member

    The IR photo was taken a bit lower down on the beach side of the same hill, around 50 to 75 feet above the water I'm guessing.

    Lens was zoomed to 210 mm. (35mm equivalent 315 mm) Video was cropped, so does not match the original focal length.

    It was the combination of the high contrast black and white setting with IR filter that really brought out the details.

    The skyline was just as visible standing at the waters edge.

    I'm amazed how well the google earth image matches the real photos.
     
    Last edited: Jul 16, 2019 at 5:18 AM
  10. Trailblazer

    Trailblazer Moderator Staff Member

    That Google Earth comparison is missing a tall building at the left, which seems to be the Essex on the Park tower. (It only opened this year.)

    upload_2019-7-16_13-39-26.
     
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  11. Spectrar Ghost

    Spectrar Ghost Senior Member

    You can see the construction cranes in google earth at that location though...
     
  12. Amber Robot

    Amber Robot Member

    Focal length gives me a sense of angular scale, assuming a certain format of sensor. I was curious how zoomed in it was.
     
  13. Mick West

    Mick West Administrator Staff Member

    The field of view is about 2.25° in the crop I posted above. About 900mm equiv, so must be around a 1/3 crop of the original.

    Seems like an ideal location for someone with an IR modified P900/1000