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Thread: UV Filters

  1. #21
    MattKing's Avatar
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    Correct me if I am wrong, but filters are a problem when they are of poor quality because filters both transmit and refract light, and therefor can add optical distortion to the lens. Dust and dirt, unless there in great quantity, only cut down on the light transmitted.

    Grease, because it can refract light in certain circumstances, can do both.

    Matt

  2. #22

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    Quote Originally Posted by t_nunn View Post
    I'm not really sure what my previous post has to do with dust on a lens.
    Opps, I meant to quote Lee, not you. My mistake.

  3. #23
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    Quote Originally Posted by reub2000 View Post
    Opps, I meant to quote Lee, not you. My mistake.

    Just checking. I couldn't quite make the connection.
    ____________________________________________
    Searching my way to perplexion

  4. #24
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    Quote Originally Posted by Stever View Post
    Dust and grease can affect photographs whether they are on a filter or a lens. I would rather clean a filter and discard it when its coating gets worn then replace a lens when its coating gets warn. YMMV. If you are independently wealthy then this comment may not apply to you.

    Steve
    Steve:

    My post was in response to the apparent confusion here between the effects of low quality filters, and the effects of dust and dirt. In my somewhat unclear manner, I was trying to make it more clear that the effects are different, and should not be confused.

    I agree that there is a real practical advantage to filters, as long as they are carefully chosen and maintained.

    As to independent wealth, I remain in hope...

    Matt

  5. #25

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    I didn't really start this thread to debate the effectiveness of clear filters in protecting a lens.

    I think I got my answer. A UV filter will make distant objects seem less hazy.

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