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Thread: Help : How to remove the black particle inside the lens ?

  1. #1
    Member Krisgage's Avatar
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    Default Help : How to remove the black particle inside the lens ?

    Hi

    When I look into my Nikon 18-200 VR lens, I notice there is a black particle inside the lens. I tried to blow and even used the vacuum but I could not remove it. I did a closer inspection, it is at before the shutter gate. Please advice me on how to remove it. Thank you.

    Canon EOS 70D
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    Default Re: Help : How to remove the black particle inside the lens ?

    try asking fatigue, see whether he got any advise to help you.

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    Member Krisgage's Avatar
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    Default Re: Help : How to remove the black particle inside the lens ?

    Quote Originally Posted by Simon_84 View Post
    try asking fatigue, see whether he got any advise to help you.
    Thanks. May I know who is fatigue ?
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    Moderator catchlights's Avatar
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    Default Re: Help : How to remove the black particle inside the lens ?

    Quote Originally Posted by Krisgage View Post
    Thanks. May I know who is fatigue ?
    part time camera repair, you can search "fatigue"
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    Default Re: Help : How to remove the black particle inside the lens ?

    dont quote me.

    I have the same problem with 105mm thought it is a scratch, use all kind of method to remove/clean it. I sort of given up but went to NSC as a lost hope. they were able remove it for me.

    Add : they did it in 5 min.
    Last edited by longkangman; 6th February 2009 at 04:09 PM.

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    Senior Member fatigue's Avatar
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    Default Re: Help : How to remove the black particle inside the lens ?

    Quote Originally Posted by longkangman View Post
    dont quote me.

    I have the same problem with 105mm thought it is a scratch, use all kind of method to remove/clean it. I sort of given up but went to NSC as a lost hope. they were able remove it for me.

    Add : they did it in 5 min.
    Yes, it only takes a few minutes to remove it.
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  7. #7
    Senior Member fatigue's Avatar
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    Default Re: Help : How to remove the black particle inside the lens ?

    Do not use blower or vacuum if you're not opening the lens. More dust might go in.

    To remove that dust, use the zoom mechanism to "pump" air.
    Set zoom to 200mm then quickly (with care) zoom out to around 50mm.
    Since you mention that the dust is in front of the aperture blades, open the aperture to max (just like what you did to take the shot to show the dust) during the "pump". This will make it easier for the dust go out of that area.
    And also point the front of the lens upward (mount facing downward). This will minimize the stress in the zoom mechanism since gravity will assist you to pull down the front part of the lens.

    Try once or twice. If not successful, try to cover the mount with rear cap and repeat the same procedure. Having the rear cap on will redirect the air in a different direction. This might improve your luck.

    This procedure might not actually remove the dust inside the lens.
    The dust might go anywhere in the barrel but at least you remove it from the place that matters most, the optics.

    Note: this procedure may not be applicable to other lens
    9815-1974
    FB: Hilos Camera Repair

  8. #8
    Member Krisgage's Avatar
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    Default Re: Help : How to remove the black particle inside the lens ?

    Quote Originally Posted by fatigue View Post
    Do not use blower or vacuum if you're not opening the lens. More dust might go in.

    To remove that dust, use the zoom mechanism to "pump" air.
    Set zoom to 200mm then quickly (with care) zoom out to around 50mm.
    Since you mention that the dust is in front of the aperture blades, open the aperture to max (just like what you did to take the shot to show the dust) during the "pump". This will make it easier for the dust go out of that area.
    And also point the front of the lens upward (mount facing downward). This will minimize the stress in the zoom mechanism since gravity will assist you to pull down the front part of the lens.

    Try once or twice. If not successful, try to cover the mount with rear cap and repeat the same procedure. Having the rear cap on will redirect the air in a different direction. This might improve your luck.

    This procedure might not actually remove the dust inside the lens.
    The dust might go anywhere in the barrel but at least you remove it from the place that matters most, the optics.

    Note: this procedure may not be applicable to other lens
    Hi

    Thank you very much for the detail help. The black particle seem embedded there. I cannot removed it according to what you told. I guess I will have to go to NSC tomorrow.

    Thanks again, I appreciated your help.
    Canon EOS 70D
    Krisgage flickr

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