Spot/flare/dirt in the viewfinder?!?

Discussion in 'Digital Discussion & Q&A' started by DaveSpruce, Oct 14, 2008.

  1. DaveSpruce

    DaveSpruce TPF Noob!

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    Hi guys.

    Just noticed the other day that when I look in my viewfinder, especially against a monotone background like a blue sky or something, there's a dot right in the center of the viewfinder, almost looks like dirt/lens flare or something else. At first I thought it was something on the lens and cleanerd it, changed to another lens. Then I thought it was in the body somehow but had a look at the photos and there's nothing in the shots, which leads me to belive it's in/on the viewfinder somewhere?!?

    Anyone know anything about this and how to get rid of it? Like I said it doesn't turn up in photos but it's still hell annoying to have in your field of vision all the time.

    Btw, here's a couple of my shots as I just signed up for this forum I thought I'd give you a couple of samples. I mostly do sports photography, but also party and people shots. Currently based in Perth, Australia. Enjoy.

    /Dave

    http://photo.davespruce.se/munich
    http://photo.davespruce.se/woodies
    http://photo.davespruce.se/niche/

    PS. Couldn't figure out how to attach photos in my post so you need to follow the links if you want to have a look:( D.S
     
  2. MelodySoul

    MelodySoul TPF Noob!

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    Dust in the sensor?
     
  3. DaveSpruce

    DaveSpruce TPF Noob!

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    Cleaned the sensor several times with the built in sensor cleaner in my D300. Didn't help
     
  4. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    You won't see sensor dust in the viewfinder; this sounds like a speck on the underside of the pentaprism. Remove the lens hold the camera so that the prism is above the lens opening, but on enough of an angle that anything falling off will fall out the lens mount and give it a few good puffs with a blower. If that doesn't work, try a lens brush.
     
  5. DaveSpruce

    DaveSpruce TPF Noob!

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    yeah I've tried that a couple of times too. Didn't help:(
     
  6. fstopusa

    fstopusa TPF Noob!

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    Have you tried unscrewing the rear viewfinder lens to see if it is in there? It has to be in the viewfinder, prism or on the mirror in order for you to see it. Sometimes the focusing screen is removable and can get dust on the top that is harder to get to. You have probably tried most of that, but I thought I would toss it out there.
     
  7. DaveSpruce

    DaveSpruce TPF Noob!

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    Unscrewing the rear viewfinder lens on a D300? How do you do that?
     
  8. dEARlEADER

    dEARlEADER TPF Noob!

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    +1... you have debris on the underside of the pentaprism.... no big deal... just blow it off..
     
  9. DaveSpruce

    DaveSpruce TPF Noob!

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    Have not with any measures been able to clean it off, I've blown in the body several times, check everything, even put the camera in bulb in blown. Nothing seams to work.. Might have to take it to a service centre and let them have a look at it.. It's just very odd that it's dead centre in the viewfinder but does not appear in photos...
     
  10. dEARlEADER

    dEARlEADER TPF Noob!

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    you can't see it in photos because the debris in on the pentaprism glass.... try harder... do you know what area we are talking about? the glass piece above the lens mount inside the camera...

    what kinda blower are you using?

    what kinda lens brush are you using?
     
  11. DaveSpruce

    DaveSpruce TPF Noob!

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    Don't have a lens brush and have only tried blowing softly with my mouth as I don't have one of those ear thingies and don't wanna get saliva in there. So it's the glass piece in the "ceiling" of the body?
     
  12. dEARlEADER

    dEARlEADER TPF Noob!

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    yes....

    and you should really buy yourself a giottos rocket blower...

    i found my D300 susceptible to debris in the same area for the first week or two after i bought it... i believe it to be lose material left over from construction... it happened three times within two weeks and hasn't happened since... i went away one weekend without the blower and removed the debris with a q-tip.... it worked...

    ps- you can also customize the D300 to perform cleaning on each start up.... this is handy if you change lenses a lot... i think the default is for you to manually select cleaning option...
     

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