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08-03-2018, 01:27 PM   #1
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Needed advice for cleaning

My k70 has dust on the top side of the focus screen... Is there an easy way to clean it?

08-03-2018, 03:58 PM   #2
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08-03-2018, 04:00 PM   #3
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If it's bad enough to impede taking pictures, you can very likely follow the various YouTube videos on how to remove/replace the focusing screen of the K30/50 predecessors, and see if that looks like the interior of your K70.
08-03-2018, 05:54 PM   #4
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Have you already tried using a manual air blower?

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08-03-2018, 06:30 PM   #5
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I cleaned mine with a soft brush. Huge mistake. Left visible black scratches. Use a blower or forget about it.
08-03-2018, 09:11 PM   #6
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First, I'll try a blower blub.

If that does not work, then I use an expensive sensor cleaning brush. Before using it I hit the bristles with canned air. This charges them and helps them to pick up and trap loose particles on the focus screen.
08-04-2018, 01:52 AM   #7
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Thank you. So the trick was to remove the screen, which i managed but then damaged the surface... still working but will need new one.
08-08-2018, 11:32 PM   #8
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My K-70, which I just purchased in June of this year, has dust on the sensor, unfortunately. I first noticed a fuzzy line in the same spot on many photos and then discovered it was lens independent and got worse with smaller aperture. Finally tonight I did some testing and then cleaned with a small blower. The fuzzy is gone, but now I have dust specks all over (again, same spot on every photo)I have dust shake enabled with each turn on, so I turned camera on and off multiple times, too - no good. I just ordered a large rocket blower per advice from other posts. We will see if that works, but what are next steps if not? Will cleaning beyond just using blower void warranty? Dry or wet clean?

I don't think the K-70 has the "dust mapping" feature that some other Pentax units have?

08-09-2018, 07:46 AM   #9
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Bought my K-70 January 1st. I change lenses a lot. Rarely out in the field though. But trust me. My house and vehicle are far from being a dust free environment. I have dust removal enabled at start up. I've needed to use a rocket blower on the sensor three times. As of yet have not needed to resort to any more drastic measures. I do use the rocket blower on the lens every time before attaching to camera. Also have rear cap on lens loosened and orange dot facing me to ensure a quick switch. These small precautions have so far worked for me.
08-09-2018, 10:50 PM   #10
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Thanks, I'm really hoping the rocket blower does the trick. I'm going to be more cautious in the future regarding lens changes.
09-11-2018, 08:34 PM   #11
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I bought a K70 in May and have just noticed what I am guessing are dust spots on the sensor ( it does it with both my lenses' ) showing up in the top left corner. It is most noticeable when that area of the photo is sky. I also have dust removal enabled at start up but it has not solved the problem. I have rarely changed lenses so far and have always done so in an inside environment so am a little disappointed that I would be dealing with dust on the sensor already with this camera. I have a generic bulb blower but have not tried it yet. Is the rocket blower better? I do not want to make things worse as described by daveo76.
Thank you.

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