Originally posted by FHPhotographer 
I just wet-cleaned my K100 sensor thoroughly and got rid of all the tough dust spots that wouldn't be blown away, but there is something, somewhere that is showing up as a very annoying spot in the VF. I've cleaned the VF window, but it's still there. Could it be on the focusing screen and, if so, can that be cleaned?
Brian
Yes, it's probably on the focus screen, and yes, it can be cleaned - the focus screen can be removed and blown off. However, chances are also very good that in the effort to remove it and replace it, you'd make it worse - fingerprints and scratches on the focus screen are permanent. That's a common enough problem people get themselves into with models in which the focus screen is designed to be easily replaced, and the K100D isn't one of those, so it's even easier to screw up with it than with the *istDS, K10D, or K20D.
Bottom line: if it doesn't absolutely ruin the picture taking experience, you're probably better off leaving it alone. At most, try blowing some air on the underside of the screen on the offchance that it's there, not above - but it's probably above.
But if you're wanting to try, the latch to release the focus screen is visibl when you look inside the camera - toward the very front of the camera, adjacent to the screen itself. You can probably find good directions on focus screen replacement online somewhere.
EDIT: I see you've got a Katzeye. If you installed it yourself, the you already know what you're in for in removing and re-installing it. If not, it may have come with documentation on the process?
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