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Thread: Night photos with additional spots

  1. #21
    Moderator Francis247's Avatar
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    Default Re: Night photos with additional spots

    Dear Threadstarter,

    To illustrate sulhan's point :

    Quote Originally Posted by sulhan View Post
    These are re-reflected light internally to the sensor surface to the inner lens surface and back again into the sensor. The lights are practically reflected and then inverted as it re-enters the sensor.

    This problem may be inherent to the grade of anti reflection coating of the lens internals. The source of light may just be too "strong" with respect to the rest of the other light source. Stopping down the lens (use higher aperture values) may help at times.
    You can try inverting your original image (without cropping) 180 degree to see where those spots come from.

    Just for illustration, I download your picture and created a GIF animation to let you see where is the problem area. Cheerz.

    莫问前程有愧,只求今生无悔. Time pasts, Places changed, Beauty faded, what is left are Photos of Memories…

  2. #22
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    Default Re: Night photos with additional spots

    Quote Originally Posted by Francis247 View Post
    Dear Threadstarter,

    To illustrate sulhan's point :



    You can try inverting your original image (without cropping) 180 degree to see where those spots come from.

    Just for illustration, I download your picture and created a GIF animation to let you see where is the problem area. Cheerz.
    now i understood by seeing where the lights actually do reflect, thanks a lot for clarifying.

    and will try out use DK-5 to shoot to test.

  3. #23
    Moderator Francis247's Avatar
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    Default Re: Night photos with additional spots

    Quote Originally Posted by wmayeo View Post
    now i understood by seeing where the lights actually do reflect, thanks a lot for clarifying.

    and will try out use DK-5 to shoot to test.
    You don't really need a DK-5, just a black cloth or your finger will do the trick.
    The ghosting effect is mostly due to the lens. Try other lenses or different angle to see if the problem persist.
    Have fun shooting.
    莫问前程有愧,只求今生无悔. Time pasts, Places changed, Beauty faded, what is left are Photos of Memories…

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