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09-21-2011, 07:13 AM   #1
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Dust in CMOS?How to clear it?

F40



F5.6



I used Dust removal function,fan,hand vacuum cleaner ,these can't remove that.



I used the blower,these dust just more in the sensor and move position.


Last edited by Bramela; 09-23-2011 at 11:42 PM.
09-21-2011, 11:07 AM   #2
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QuoteOriginally posted by personal Quote
F40

I used Dust removal function,fan,hand vacuum cleaner ,these can't remove that.
For that kind of dust you'll need a wet swipe.
You could try a dry swipe first; take a small, new, makeup brush, wash it with soft soap, rise it, dry it. Then swipe the sensor, then use a rocket blower.
If that does not help, you'll need to buy wet swipes, the Internet is full of offers and instructions. It is not difficult, but be carefull.

Bert
09-21-2011, 04:53 PM   #3
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Don't use a fan or vacuum, you'll add more dust. Use the rocket blower with the mount pointing slightly downward, let gravity help a little. When that doesn't work try a product sold by reputable businesses. Sensor Swabs have worked well for me and are not too overly pricey.
09-21-2011, 05:56 PM   #4
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If you are brave enough as I am, then you can use a lens cloth.
Just make sure you know exactly where the dust is on the sensor.
If it appears exactly as the photo then it would usually be at the bottom of the sensor.

09-25-2011, 03:26 AM   #5
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I used a blower many times,than dust become more.
Dust Removal function is 100% non-useful.


Uploaded with ImageShack.us

Last edited by personal; 09-25-2011 at 03:33 AM.
09-25-2011, 03:50 AM   #6
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Don't get obsessed with small bits of dust. Unless you shoot at f22+ you won't notice it much of the time. Have a read of this: The Pixel Sweeper
09-25-2011, 06:10 AM   #7
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QuoteOriginally posted by kh1234567890 Quote
Don't get obsessed with small bits of dust. Unless you shoot at f22+ you won't notice it much of the time. Have a read of this: The Pixel Sweeper
I saw dust in F11,anyway,I like small aperture...
09-25-2011, 07:24 AM   #8
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See: https://www.pentaxforums.com/forums/pentax-dslr-camera-articles/121739-those-...ur-photos.html

09-25-2011, 01:11 PM   #9
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QuoteOriginally posted by personal Quote
I used a blower many times,than dust become more.
Dust Removal function is 100% non-useful.
I have the dust removal function set to run every time I turn the camera on and I think it has to help. But once a dust particle gets a tiny bit of moisture in it, it sticks. You definitely can blow more dust around, but you have to keep at it. If the spots are moving they are not stuck and you should be able to blow them out. It does take a lot of patience, blow it out, use dust alert, blow again.. maybe many times. The dust alert tool is great for seeing exactly where the dust is and concentrating the blower. Remember where you see dust on your photo, is upside down as to where it is on you sensor., the dust alert function shows you in relation to the mount. Also do this in the cleanest environment that you can, and turn off any fans, or anything causing air movement. Use gravity, hold the camera over your head if you need to. Although dust blows around easily, it usually falls down.
09-25-2011, 09:45 PM   #10
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How do remove dust stuck by moistur?Dehumidifier?
I just bought this camera two weeks ago,hop no accident on it.
09-25-2011, 09:59 PM   #11
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Use the Eclipse wet wipe system - it's actually quite easy and effective.
09-25-2011, 10:03 PM   #12
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I'm going to look into the wet method. I'd previously been singing the praises of the pentax lollipop until the last time I used it when made a complete mess by depositing bits of itself on my sensor

I woundn't go beyond completely dry methods (blower, brush) unless the sensor is a lot dirtier than the pic posted to be honest.
09-26-2011, 04:19 AM   #13
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Before wet wipe, but after using the blower - I used the Pentax lollipop before, but not with the same kind of success.


After wet wipe - two are left because I wasn't confident on how to use the wipe. You can apply quite a bit of pressure before pulling across - The Eclipse wipe is just a bit smaller than the Pentax APS-C sensor, so you have to get the whole sensor on both wipes.


Shot was taken at F22.
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