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Thread: Filter problem or lens problem?

  1. #1

    Default Filter problem or lens problem?

    Hi all,

    I'm currently using a 50mm f1.8 II and a tokina UV filter to shoot these pictures.
    Under low light condition with a presence of a strong light source, I can see reflections of the strong light sources through the viewfinder and when I take picture with it, spots (or reflections) will appear in the picture.

    Here are some example shots taken from Esplanade. (pictures a bit blur cause taken without tripod)





    The "Mandarin Oriental" word appeared in the sky (reflected from the building), taken at f1.8





    Taken with filter on. Can even see the lights from the boat in the sky






    Taken with UV Filter at f1.8, can see the reflections (inverted reflection) of the four spotlights and the 2 spotlights





    Taken without the UV filter at f1.8, can see the blue spots right above the strong spot lights

    Without the filter on, the spots will not be seen from the viewfinder but will show up in the pictures.


    What would cause these problems?

  2. #2
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    Default Re: Filter problem or lens problem?

    Cant's see EXIF data. Was flash fired?

  3. #3
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    Default Re: Filter problem or lens problem?


  4. #4

    Default Re: Filter problem or lens problem?

    no flash fired.
    just the surrounding lightings

  5. #5

    Default Re: Filter problem or lens problem?

    Quote Originally Posted by ndroo View Post
    oh alright,
    that helps a lot.
    thanks.

    But still curious how come such an event will happen

  6. #6

    Default Re: Filter problem or lens problem?

    It's ghosting (lens reflection flare) due to the filter.

    Remove your filter and it should be fine.

    http://forums.clubsnap.com/showthread.php?t=312755

  7. #7

    Default Re: Filter problem or lens problem?

    Quote Originally Posted by P3rSeUs View Post
    Hi all,

    I'm currently using a 50mm f1.8 II and a tokina UV filter to shoot these pictures.
    Under low light condition with a presence of a strong light source, I can see reflections of the strong light sources through the viewfinder and when I take picture with it, spots (or reflections) will appear in the picture.





    Taken without the UV filter at f1.8, can see the blue spots right above the strong spot lights

    Without the filter on, the spots will not be seen from the viewfinder but will show up in the pictures.


    What would cause these problems?
    The last one is probably due to the lens since the filter is off now.

    Anyway, ghosting is a reflection of strong concentratd light either off the inner surface of the filter or the lens elements and you can see them if you invert your picture like the one below :

    Original :


  8. #8

    Default Re: Filter problem or lens problem?

    The ghosting are due to the non multicoating on the tokina filter. And also the 50mm f1.8 will cause ghosting when shoot at wide open which is very common for fast lens. But why do u want to shoot landscape at f1.8?

  9. #9
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    Default Re: Filter problem or lens problem?

    remove your filter lah.

  10. #10
    Senior Member Canew's Avatar
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    Default Re: Filter problem or lens problem?

    Wow! These photos are classic examples of 'ghosting.' It will be good examples to show other newbies what is 'ghosting.'

  11. #11

    Default Re: Filter problem or lens problem?

    Alternatively, use a hood. However, in this case, it won't work as well.

    Samuel
    f/8 and be there.

  12. #12

    Default Re: Filter problem or lens problem?

    okay,

    thanks a lot for all the replies.
    will now understand more regarding the issue.
    cheers!


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