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  1. #1
    Senior Member

    Question Puzzled by the strange image in my moon photo

    Puzzled by the strange image in my moon photo
    Hi, Made a shot of the bloody fire moon in the smoky sky in NorCal. It turned out there came some strange pattern or image around the moon covering almost the entire background. The moon itself is not affected. Put the original size copy on dropbox:

    https://www.dropbox.com/sh/zb8it5n31...q0Gk6Nf7a?dl=0

    Any idea

    p.s. Give up with dropbox! Even I can't open the image file! Check the downsized copy below and see if it's visible.

    Puzzled by the strange image in my moon photo-2020-10-02-21.23.32-nik-3-s.jpg


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    Last edited by blackstar; 10-04-2020 at 03:33 AM.



  2. #2
    Senior Member
    BeegRhob's Avatar

    Re: Puzzled by the strange image in my moon photo

    Kinda sorta like 2 eyes, but not really. Stray light?

    Rob
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  3. #3
    Senior Member
    FredKingston's Avatar

    Re: Puzzled by the strange image in my moon photo

    It looks like you processed the file you posted with Nik tools... Do you have the image as it came out of the camera???

    If you increase the exposure, the pattern becomes very pronounced... It looks like extreme long-exposure sensor heat, although from the EXIF data, I wouldn't have expected that short of an exposure speed to create that much heat... Were you using Live-View to shoot this image(s)...

  4. #4
    Staff
    Super Mod
    hark's Avatar

    Re: Puzzled by the strange image in my moon photo

    Was this image taken as a single shot or is it multiple images combined? Is the original file NEF or jpeg? If it was jpeg, are you processing it as 16-bit or 8-bit?
    Cindy - D750, D500, D7200
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  5. #5
    Senior Member

    Re: Puzzled by the strange image in my moon photo

    Puzzled by the strange image in my moon photo
    Thanks, Rob, Fred, and Cindy.

    I did process the original jpg in Nik's HDR Efex. I shot in both RAW and jpg. The one I posted is single jpg image processed. Now I think Fred is probably right about the exposure effect cause Nik HDR takes the original image to render other exposure versions (high, medium, low) and blend into one final image. My original image should be considered "low" exposure (check out original image below). Still puzzled why that "symmetric" and "recognisable" pattern (like a magnetic field pattern) show up? Usually only some irregular and random patterns would be shown in images that are high or over exposure processed.
    Puzzled by the strange image in my moon photo-2020-10-02-21.23.32-s.jpg





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