Sensor dust on 5D Mark IV

Discussion in 'Technical Troubleshooting' started by Raihan Ahmed, Aug 16, 2021.

  1. Raihan Ahmed

    Raihan Ahmed New Member

    Joined:
    Aug 16, 2021
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    Equipment:
    5D Mark IV
    70-200 f/2.8 IS II
    Hello there.

    I'm facing trouble with sensor dust spots on my photos.

    I'm attaching two photos.
    One is before having a swab, and the second one.

    What can I do now? I hope these are merely dust spots?
    P.S : Both photos are taken at f/32.
     

    Attached Files:

    Last edited: Aug 16, 2021

  2. John L

    John L Active Member

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    Swab again!
     
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  3. Raihan Ahmed

    Raihan Ahmed New Member

    Joined:
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    Equipment:
    5D Mark IV
    70-200 f/2.8 IS II
    Are these dust spots?
     
  4. GDN

    GDN Well-Known Member

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    I would say yes. It looks as if you were doing a lens change and and a dirt laden gust of wind has dumped dirt on the sensor. With that much gunk on your sensor, you may need to have more than one go at getting rid of the dust.

    Gary
     
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  5. Raihan Ahmed

    Raihan Ahmed New Member

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    Equipment:
    5D Mark IV
    70-200 f/2.8 IS II
    Thank you very much. Someone was saying these maybe oil spots caused by shutter lubricants, but I disagreed, because the sensor was clean unless I was changing lens let those dusts to enter sensor. They're sticking like magnet. I was worried whether these are removable or not. I'll swab again.
     
  6. GDN

    GDN Well-Known Member

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    Oil marks look different. This looks like dirt. Just try cleaning the sensor a few more times.

    Gary
     
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  7. Raihan Ahmed

    Raihan Ahmed New Member

    Joined:
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    Equipment:
    5D Mark IV
    70-200 f/2.8 IS II
    I'll do sir.
     
  8. johnsey

    johnsey Site Moderator Staff Member Site Supporter

    Joined:
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    Messages:
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    Location:
    Fargo, ND
    Equipment:
    5dMk4, 5dsR, 5dMk2, 20D, 70-200 2.8L IS, 100mm 2.8 Macro USM, 50mm 1.4, 85mm 1.8, 17-40mm 4.0L, TS-E 24mm 3.5L II, Rokinon 14mm 2.8; Pixma Pro-100
    one tip is to move to a new swab after its been used, never re-use the swab it will just have dust on it.
    And wow is that a lot of dust in the first pic :eek:
     

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