Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
12-15-2008, 08:53 AM   #1
Veteran Member

Join Date: Aug 2007
Posts: 356
Dust on mirror?

I just picked up a used K100D super and when I look through the viewfinder i see lots of little black specks. Its there for whatever lens I use. Is it correct to believe that the dust is on the mirror then? When I take a picture, I still get dust spots but in different places (i think). If it is on the mirror, it probably doesnt affect image quality but it still bugs the heck outta me because I'm used to my K100D looking nice and clear. Im afraid to touch the mirror so whats the best way to deal with it? A blower of some sort?

12-15-2008, 10:20 AM   #2
Veteran Member
rburgoss's Avatar

Join Date: May 2008
Location: San Jose, Costa Rica
Photos: Gallery | Albums
Posts: 972
I you can see them, then dust specs are on the focusing screen, not the mirror. Cleaning them is not easy and may lead to scratching (marking) the focusing screen.

The ONLY thing I would try myself, is to try a couple of air blasts from a rocket blower or similar WITHOUT TOUCHING the focusing screen.

I know, It is quite annoying, but it will not affect your pictures.
12-15-2008, 10:29 AM   #3
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
If there are a handful of irregularly placed spots, then those would be on the focus screen, as the previous poster mentioned. However, it you see what appears to be a coating of these all over the viewfinder, that's actually the normal textured pattern of the focus screen itself - it's what allows the image to actually form on the screen, rather than passing straight through as it would a completely clear piece of plastic or glass. One normally only notices this pattern in certain types of light.

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, dust, k100d, mirror, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax K-7 Dust Alert and Dust Removal Functions brosen Pentax DSLR Discussion 9 02-09-2016 04:43 AM
Blowing dust. Will I get more dust inside ? alphalt Pentax DSLR Discussion 7 05-12-2010 10:09 PM
dust on sensor or dust on lens 41ants Troubleshooting and Beginner Help 10 10-08-2009 10:28 AM
Mirror, Mirror in the Garden... JMR Post Your Photos! 11 02-20-2009 03:41 PM
dust-- mirror or sensor? tmacdon Pentax DSLR Discussion 9 08-14-2008 09:51 AM

All times are GMT -7. The time now is 12:24 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]