I have a very interesting thing happening with my Nikon D3100. When I look through the view finder I can see very prominent dust particles all over the frame. I know it is not dust on the sensor because these particles do not appear in any photos taken. I have opened the camera and used the hand blower, q-tips with a small amount of alcohol, etc and cleaned the mirror, sensor, lenses, viewfinder (on the outside anyways) and practically everything I can find that seems to be a part of imaging and no matter what I do, those particles remain there unmoved and unaffected.

Where in the world are they and how do I remove them?


on the focusing screen, probably. if you can't remove them, don't worry, they'll not show up on your photos.

if you dare, you can follow these instructions to remove it for cleaning.

  • They are VERY annoying while taking pictures. I have even considered taking into a shop to be cleaned but I imagine the cost would be ridiculous.
    – MikeV
    Sep 11 '14 at 18:11
  • @MikeV see my update
    – ths
    Sep 11 '14 at 18:25
  • I will give this a try to clean the focusing screen and hopefully I will be able to remove these things.
    – MikeV
    Sep 11 '14 at 18:36
  • Just me, but don't touch the focus screen unless you're prepared to replace it. Matte plastic is very very easily scratched/rubbed--I've done it with microfiber cloths, let alone cotton swabs. Try a bulb blower aimed at the "ceiling" of the chamber, with the camera held face-to-the-floor first.
    – inkista
    Sep 13 '14 at 17:37

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