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Thread: dust or scratch?

  1. #1

    Default dust or scratch?

    fainted marks spotted @ F14 (seldom shoot till F14 but..)


    F18


    F22


    F29


    looks like scratch to me.. when I locked the mirror, I saw like hairline dust, used blower but seems like 2 perm marks, un removable.

    is it a layer of thin membrane o film over the sensor?
    worried that it might b scratch marks..
    cleaning at NSC @ 26.75 for D90..

  2. #2
    Senior Member zac08's Avatar
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    Default Re: dust or scratch?

    Possible dust... go to the service centre and ask them to clean it.
    Michael Lim
    My Flickr Site

  3. #3

    Default Re: dust or scratch?

    what if are scratches?.. damn so stunned when saw my pics mostly filled with a dark line

  4. #4
    Moderator catchlights's Avatar
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    Default Re: dust or scratch?

    unlikely is scratches, unless you always use something to poke inside your camera, btw your sensor is very very dirty. try to shoot @ f22 and see.
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  5. #5

    Default Re: dust or scratch?

    i did, yes, very.. but cannt realli say its dirty, i aimed in low light towards monitor with white screen @ ISO 3200, so grainy look.
    anyway i guess i decided to go down NSC tmr.

    thanks.. hope not scratches

  6. #6

    Default Re: dust or scratch?

    Suggest professional cleaning lens and see what happens.

  7. #7

    Default Re: dust or scratch?

    Try with F22 and point towards a clear sky or a sky blue colored card board. You should be able to clearly spot the dust bunnies. Some of the dust specks are wet and has streaks which resemble a scratch. If you're ok in spending those $$ cleaning at NSC, please go ahead for the peace of mind. The Low Pass Filter above your sensor is quite tough to scratch and you won't do any harm by cleaning with E2 + Sensor Swab which is available in most of the reputable shops.

    Search for a similar thread by me on NSC's capabilities on sensor cleaning. They made it worse and took about 7 - 8 times to clean it properly. Make sure that you check your camera, especially your viewfinder after you get it back. They hold no warranty for sensor cleaning and make sure you bring your own lens and a gray or blue card to test at F22.

  8. #8

  9. #9

    Default Re: dust or scratch?

    Might be dust on ur sensor or dust in ur lens. Try using diff lenses to see which is the case.
    BTW other than the marks u pointed out I noticed several other dark spots, u may wanna check it out.
    HTH, just my 2 cents

  10. #10

    Default Re: dust or scratch?

    yup. already did.
    NSC tmr.. no proper tools.

  11. #11

    Default Re: dust or scratch?

    a friendly warning to all, self attempt to clean your sensor is at your own risk.
    just returned from NSC today and my D90 was kept away as the 2 'lines' are proven as scratches.
    a replacement D80 as kindly loaned to me for these few days till I get my body back.. sad.

    trust the professionals.

  12. #12

    Default Re: dust or scratch?

    Omg...so sorry to hear that...how much damage on ur wallet?

  13. #13

    Default Re: dust or scratch?

    actually I'm lucky to have my last day of warranty as of tmr.. but however, CMOS sensor is not within warranty, so nikon is kind to do me 1 time service (for this time rd).
    supposingly a cleaning svc @ 26.75 for D90 was waivered but I have to check again with them. since they changing the sensor for me.. so I guess that's free liao.

    anyway, the low pass filter is not realli scratch resistant.. a note

  14. #14

    Default Re: dust or scratch?

    Quote Originally Posted by akagi07 View Post
    actually I'm lucky to have my last day of warranty as of tmr.. but however, CMOS sensor is not within warranty, so nikon is kind to do me 1 time service (for this time rd).
    supposingly a cleaning svc @ 26.75 for D90 was waivered but I have to check again with them. since they changing the sensor for me.. so I guess that's free liao.

    anyway, the low pass filter is not realli scratch resistant.. a note
    So how in the earth U get those scratches on the LPF? U clean the sensor yourself?

  15. #15

    Default Re: dust or scratch?

    actually with a lens tissue and a soft brush.. i also dun know how the 2 lines got there....
    nvm i guess my own to blame ..

  16. #16

    Default Re: dust or scratch?

    Quote Originally Posted by akagi07 View Post
    lens tissue
    Think u use the wrong tools on the LPF!

  17. #17

  18. #18

    Default Re: dust or scratch?

    Quote Originally Posted by akagi07 View Post
    yes definitely..
    so don play play
    Dude, I was recommending to use the right tools and normal lens tissue / brush is definitely a no go

    I have been using Sensor Swab and E2 without any problems after the nightmare that I had with NSC. Search for my thread in CS about my experience with them for cleaning. Do you know that NSC doesn't have a clean room for cleaning? This was told by the engineer when he took more than 8 times to clean it properly for me..

    BTW, they might not replace the sensor for you, it's gonna be just the LP filter on top of the sensor. In any case, it's good for you! All the best!

  19. #19

    Default Re: dust or scratch?

    Quote Originally Posted by geekbrains View Post
    ..... Do you know that NSC doesn't have a clean room for cleaning? ...
    oh ... so is there a clean room in CSC?

  20. #20
    Member tropiccana's Avatar
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    Default Re: dust or scratch?

    Quote Originally Posted by IamJeFfy View Post
    oh ... so is there a clean room in CSC?
    i thk they should have

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