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Thread: Hairline scratches on filters question

  1. #1

    Default Hairline scratches on filters question

    hi,

    i just bought a 2nd hand tamron lens and UV filter was given too.

    notice there's a few hairline scratches on the filter.

    will it affect the overall image?

    and if i am using square ND filter, should i remove the UV filter? it will be better then stacking right?

    thanks!
    Check out my Flickr

  2. #2
    Senior Member luckyorange's Avatar
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    Default Re: Hairline scratches on filters question

    hmm dont think it will affect iq

    and yup 1 filter at a time
    Lousy de My Flickr

  3. #3

    Default Re: Hairline scratches on filters question

    alright thanks man!

    will replace filter when got money. haha
    Check out my Flickr

  4. #4
    Moderator Octarine's Avatar
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    Default Re: Hairline scratches on filters question

    Throw the UV filter, learn to be careful. Don't stack filters, will only cause trouble.
    EOS

  5. #5
    Senior Member edutilos-'s Avatar
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    Default Re: Hairline scratches on filters question

    It will not affect IQ most of the time if it's hairline. It may increase the chances of flaring, that's all, when there are concentrated sources of light shining on the filter (e.g. at night).

  6. #6
    Moderator rhino123's Avatar
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    Default Re: Hairline scratches on filters question

    You can actually test that out pretty easily.

    Step 1:

    Set your camera on a tripod

    Step 2:

    Select and subject and shoot (with filter on)

    Step 3:

    remove the filter

    Step 4:

    Shoot the same subject again using the exact same setting as when you have filter on.

    Step 5:

    Carry on the experiment under different lighting (morning, afternoon, evening and night).

    Then put these pics in your computer and check. There you will see if there is any issues, if don't have, then no need to bother with buying new filter or what.

    If have issue, then throw the filter away and save up for new one.

    And, yes, as other had advice, don't stack filters, it will degrade your image quality.
    I am not a photographer, just someone who happened to have a couple of cameras.
    My lousy shots

  7. #7
    Moderator Octarine's Avatar
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    Default Re: Hairline scratches on filters question

    Just compare damages and actual impact on images: http://kurtmunger.com/dirty_lens_articleid35.html
    Get a lens hood, it's the better protector. Most knocks come from sideways, to the rim. Plastic hoods will catch the blow and distribute and absorb the energy. If plastic cracks it's easily replaces. Metal ring filter will not absorb anything but forward the energy to the lens element. There are other threads here asking about removing a cracked filter from the lens... Go and read, decide for yourself what makes more sense. Btw: have you seen any lens manufacturer recommending a certain filter brand? I wonder why
    EOS

  8. #8

    Default Re: Hairline scratches on filters question

    Quote Originally Posted by gaoxing840 View Post
    hi,

    i just bought a 2nd hand tamron lens and UV filter was given too.

    notice there's a few hairline scratches on the filter.

    will it affect the overall image?

    and if i am using square ND filter, should i remove the UV filter? it will be better then stacking right?

    thanks!
    I thought the best way is to find out yourself?!?! Start shooting and see the pictures yourself.
    D200

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