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Thread: Is dust on filters (e.g. UV, PL, etc) critical?

  1. #1

    Question Is dust on filters (e.g. UV, PL, etc) critical?

    As title. Will dust on the filters e.g. macro, UV, PL, etc affect the output of the shot? I did some testing on my own but couldn't find any difference (I even zoomed those tested shots to 4x it's max resolution (2560).

    So can I conclude that dust on filters doesn't affect the image output?

  2. #2

    Default Re: Is dust on filters (e.g. UV, PL, etc) critical?

    if no loss in pq why bother? juz use a blower on your filter end of the day..

  3. #3
    Senior Member giantcanopy's Avatar
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    Default Re: Is dust on filters (e.g. UV, PL, etc) critical?

    They can potentially turn up in the picture as dust spots.

    Even if you cannot see the dust spots on the final picture, it is still good habit to keep them clean

    Ryan

  4. #4

    Default Re: Is dust on filters (e.g. UV, PL, etc) critical?

    Don't worry so much about dust spots on the front lens elements. It really doesn't affect your pics. I have used an old lens with a crack right through the the lens and it doesn't affect the lens - just paint the crack with black marker to reduce light diffractions.

    Its the rear elements that you will want to be careful of - the one facing your sensor or film plane. Spots there will definitely show up.

  5. #5

    Default Re: Is dust on filters (e.g. UV, PL, etc) critical?

    Not to worry so much, it really doesnt affect your pics. as mention, just use a blower to clear the dust off when availiable.

  6. #6
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    Default Re: Is dust on filters (e.g. UV, PL, etc) critical?

    Quote Originally Posted by giantcanopy View Post
    They can potentially turn up in the picture as dust spots.

    Even if you cannot see the dust spots on the final picture, it is still good habit to keep them clean

    Ryan
    No, filter dust will never show up as spots. Only dust on the sensor (or very near it, such as at the rear element) will potentially show up, and only at very small apertures.

  7. #7
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    Default Re: Is dust on filters (e.g. UV, PL, etc) critical?

    yup... i used a filter full of sand n dust ytd at Sentosa... nw reviewing the pics, no dust spots... so i tink like most have said.. its the places nearer to sensor that matters..
    Pentax K100D Super

  8. #8

    Default Re: Is dust on filters (e.g. UV, PL, etc) critical?

    Quote Originally Posted by windwaver View Post
    As title. Will dust on the filters e.g. macro, UV, PL, etc affect the output of the shot? I did some testing on my own but couldn't find any difference (I even zoomed those tested shots to 4x it's max resolution (2560).

    So can I conclude that dust on filters doesn't affect the image output?
    Yup it doesn't, unless your entire filter filter is coated with dust.

    But still I think it's better to keep them clean, no?

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