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05-18-2012, 10:06 AM   #1
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k-5 dust removal

When i select "dust removal" from the menu on my k-x the camera then vibrates shaking off dust..

When i do this on the k-5 it does seem to do anything.

Is this normal? If so, how does it manage to clean dust off the sensor?

05-18-2012, 10:08 AM   #2
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It's ultrasonic. Try putting the camera to your ear and then turning it on; you should hear a high-pitched whine for a second or two. I had the same concern moving up from kx to k5 myself.
05-18-2012, 11:03 AM   #3
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QuoteOriginally posted by wildweasel Quote
It's ultrasonic. Try putting the camera to your ear and then turning it on; you should hear a high-pitched whine for a second or two. I had the same concern moving up from kx to k5 myself.
On my old K-7 I could hear it with no problem but I don't think I can hear it at all with my K-5.
05-18-2012, 11:28 AM   #4
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I can, just, but only if I have the camera really close to my ear.

05-18-2012, 11:34 AM   #5
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Geekette - the dust removal on the k-5 is a bit different, is my understanding. It is extremely quiet in part because of a change in mechanisms, but also because the k-5 is one sturdy and tight body that doesn't really transmit sound.

Sorta how the k-5's shutter sound is so much more quiet than something like a k-r.
05-18-2012, 05:42 PM   #6
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As said above, it's ultrasonic so it doesn't shake the sensor. It works much better than the K-x's vibrating sensor dust removal.
05-19-2012, 06:28 PM   #7
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Pentax keeps getting better with their dust removal... the old K100d dust removal shook the whole camera! The K5d is more like a moskito inside the camera.

Pat
06-07-2012, 12:23 PM   #8
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I'm a new member whom just got a K-5; upgraged from a Kx I've had the past 3 years..
I will accept that the new ultrasonic Dust Removal function is barely perceptible on the K5 when accessed thru the menu....but why is the dust removal action when you power on so noticeable and different (a strong significant short bursting buzz & vibration)?
On the Kx there is no appeciable difference between the dust removal action when done via the menu or powering on.
Thanks, has had me concerned since I recently got the camera. Thanks

06-07-2012, 01:55 PM   #9
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Ah ha....just found it in another topic...what I am hearing on power up is apparently the " scratching noise caused by the aperture lever " and has nothing to do with Dust removal....
I have already learned alot from this Pentax forum...thanks
06-08-2012, 08:25 AM   #10
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QuoteOriginally posted by ve2vfd Quote
Pentax keeps getting better with their dust removal... the old K100d dust removal shook the whole camera! The K5d is more like a moskito inside the camera.
But it still doesn't get rid of loose dust specks that have to be removed with a blower!
06-08-2012, 12:22 PM   #11
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QuoteOriginally posted by WightWalker Quote
But it still doesn't get rid of loose dust specks that have to be removed with a blower!
Indeed thats true... stubborn sticky dust is there to stay and I've had some that could only be removed with a wet cleaning. But the auto dust removal does shake off some crud... avoiding having to blow or wet wash my sensor is oooh-tay in my book .


pat
06-27-2012, 02:20 PM   #12
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I know one thing I used to have to clean the K-x sensor all the time but have only had to clean the K-5 about 3 times in the 8 months since I have had it same 8 months with the K-x I probably cleaned it 10 to 12 times.
07-08-2012, 03:09 PM   #13
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what tool do you recommend to use in this case (beside photoshop) :

07-08-2012, 03:26 PM   #14
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QuoteOriginally posted by sergiu Quote
what tool do you recommend to use in this case
Have you followed the procedure on p-341 of the K-5 manual - 'Detecting Dust on the CMOS Sensor (Dust Alert)' - and saved a Dust Alert JPG?

Does the dust alert JPG look any different to the image you have posted?
07-08-2012, 09:02 PM   #15
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yes, the JPG is clean, the test was done with photivo, according to: Check Pentax K5 sensor stain or dust with Photivo - mm-log
worked for the two "stain" bodies I've changed
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