Originally posted by DogLover I had to do this once, too, except that I did have to remove the screen and use the bulb blower really close to the screen to have enough force to blow off the stubborn dust. Hopefully, you won't have to resort to that.
Yeah, in my 3+ years of owning a K20D, I have had to do that a couple of times. It's true, it won't affect the images one bit, but those little fibers and dust specks in the viewfinder are ANNOYING!
It's pretty easy to take out and replace the focusing screen (I understand the process for the K-5 is basically the same as it is on my K20D). I did it about 20 times while shimming the focus screen for accurate manual focus, so now I can practically do it in my sleep.
But it ABSOLUTELY IS easy to scratch the focusing screen, or to get fingerprints on it. I was able to get fingerprints off with isopropyl (rubbing) alcohol and a cotton swab, but after the swab you may need to use a lint-free cloth to get the cotton fibers off that you just added!