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Thread: What is the "green dot" ?!

  1. #1

    Question What is the "green dot" ?!

    Hi Hi !

    I started to take up photography since last Dec.

    I am using Canon 300D. During my recent trip to Langkawi, I tried to take the sunset. But there is a "green dot" appeared at the photo. It seemed to me like a reflections but how come it come in green colour ?
    Can I know why ?? Any idea from your past experience ?

    I tried taking night photography and the "green dot" appear as well.
    Is there something wrong with my lenses ??

    Appreciate advise.

    Thanks !

  2. #2

    Default

    Quote Originally Posted by Meileng
    Hi Hi !

    I started to take up photography since last Dec.

    I am using Canon 300D. During my recent trip to Langkawi, I tried to take the sunset. But there is a "green dot" appeared at the photo. It seemed to me like a reflections but how come it come in green colour ?
    Can I know why ?? Any idea from your past experience ?

    I tried taking night photography and the "green dot" appear as well.
    Is there something wrong with my lenses ??

    Appreciate advise.

    Thanks !
    Without seeing the photos, I can only hazard a guess.

    Is the dot at the exact same place? It's either stuck/hot/dead pixels. Post up the photos.

  3. #3
    Senior Member
    Join Date
    May 2002
    Location
    Singapore
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    1,719

    Default

    Et? ........................

  4. #4

    Default

    I think the "green dot" was due to lens flare caused by pointing the lens directly at the sun/bright light. The green colour is due to the multicoating of the lens elements. To avoid this you can use a lens hood or try to point the lens at an angle to the sun/brightlight.

    FM

  5. #5
    Member
    Join Date
    Feb 2002
    Location
    singapore
    Posts
    431

    Default

    if green dot is big then it is a flare
    if like a pixel size then it is a problem pixel

  6. #6

    Default

    Quote Originally Posted by Meileng
    Hi Hi !

    I started to take up photography since last Dec.

    I am using Canon 300D. During my recent trip to Langkawi, I tried to take the sunset. But there is a "green dot" appeared at the photo. It seemed to me like a reflections but how come it come in green colour ?
    Can I know why ?? Any idea from your past experience ?

    I tried taking night photography and the "green dot" appear as well.
    Is there something wrong with my lenses ??

    Appreciate advise.

    Thanks !
    Try to take a picture of a white piece of paper and a black piece of paper, manual focus, what do you see? The green dot still there?

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