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mpg · 06-10-2009, 06:20 AM

I have some dots of dust inside the focuscreen of a k20d. I must remove the focus screen for clean these. There is a post about this work , I don't want problems!

alohadave · 06-10-2009, 10:40 AM

I'd leave it. It's not going to affect your pictures.

wlachan · 06-10-2009, 01:46 PM

Remove the screen and blow off the dust, that's it. DON'T wipe or rub. If you made a mistake, no problem, money will buy you another screen.

**monochrome** · 06-10-2009, 03:42 PM

Originally posted by wlachan

Remove the screen and blow off the dust, that's it. DON'T wipe or rub. If you made a mistake, no problem, money will buy you another screen.

Reminds me of the advice . . . .

Carefully remove screen
Carefully place screen on lint-free soft lens cleaning cloth on table.
Carefully smash each dot of dust as hard as you can with a large hammer.
Carefully buy new Focus Screen!!

Voila! Dust on focus screen is no longer a problem!

Seriously - just leave it there.

pbo · 06-10-2009, 05:02 PM

Originally posted by monochrome

Seriously - just leave it there.

He's right, live with those dots - coz I tried getting rid of them before. Now I have some scratches on the screen. As well as dots.

Scartist · 06-13-2009, 09:03 AM

I have a K200D which doesn't even have exchangeable focus screens, and had a big piece of dirt stuck under it.
I bought a can of compressed air and managed to blow it out with that. If they really annoy you, you could try that.

**Ash** · 06-13-2009, 01:28 PM

codiac2600 has released a youtube video on how to take the focusing screen out for cleaning/replacement.

Just for dust, though, I'd echo the setiments here and at most say it'd be OK to gently blow off the dust with a rocket blower with the focusing screen compartment deployed. Then carefully click it back into place. The focusing screen is pretty fragile - defects are clearly (and permanently) visible through the viewfinder.

06-10-2009, 06:20 AM	#1
mpg New Member Join Date: Jun 2009 Posts: 18	How to clean some dots of dust inside the focus screen I have some dots of dust inside the focuscreen of a k20d. I must remove the focus screen for clean these. There is a post about this work , I don't want problems!

06-10-2009, 03:42 PM	#4
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	Originally posted by wlachan Remove the screen and blow off the dust, that's it. DON'T wipe or rub. If you made a mistake, no problem, money will buy you another screen. Reminds me of the advice . . . . Carefully remove screen Carefully place screen on lint-free soft lens cleaning cloth on table. Carefully smash each dot of dust as hard as you can with a large hammer. Carefully buy new Focus Screen!! Voila! Dust on focus screen is no longer a problem! Seriously - just leave it there.

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06-10-2009, 10:40 AM	#2
alohadave Veteran Member Join Date: Jan 2008 Location: Quincy, MA Photos: Gallery \| Albums Posts: 2,024	I'd leave it. It's not going to affect your pictures.

06-10-2009, 01:46 PM	#3
wlachan Veteran Member Join Date: Sep 2006 Location: Canada Photos: Albums Posts: 2,625	Remove the screen and blow off the dust, that's it. DON'T wipe or rub. If you made a mistake, no problem, money will buy you another screen.

06-10-2009, 05:02 PM	#5
pbo Veteran Member Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 891	Originally posted by monochrome Seriously - just leave it there. He's right, live with those dots - coz I tried getting rid of them before. Now I have some scratches on the screen. As well as dots.

06-13-2009, 09:03 AM	#6
Scartist New Member Join Date: May 2009 Location: Hungary Posts: 18	I have a K200D which doesn't even have exchangeable focus screens, and had a big piece of dirt stuck under it. I bought a can of compressed air and managed to blow it out with that. If they really annoy you, you could try that.

06-13-2009, 01:28 PM	#7
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	codiac2600 has released a youtube video on how to take the focusing screen out for cleaning/replacement. Just for dust, though, I'd echo the setiments here and at most say it'd be OK to gently blow off the dust with a rocket blower with the focusing screen compartment deployed. Then carefully click it back into place. The focusing screen is pretty fragile - defects are clearly (and permanently) visible through the viewfinder.

How to clean some dots of dust inside the focus screen

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