Is this the dreaded sensor stain?

jeztastic · 10-31-2012, 03:44 PM

I've tried dust removal and a rocket blower to no avail...

Serial no. 4272572

**Fontan** · 10-31-2012, 03:59 PM

I think they are dusts. Wet clean it.

elliott · 10-31-2012, 04:00 PM

Just looks like normal dust, the stains were more clustered.

Na Horuk · 10-31-2012, 04:00 PM

It looks a lot like dust to me, but I don't have experience with stains (at least, not that I know of)

imtheguy · 10-31-2012, 04:04 PM

I have gone through 2 bodies with confirmed stains and agree with above they always seem clustered as in a "string of pearls" the descriptive name someone coined for the issue. I have also had similar dots that took 3 or more wet cleanings before all were gone. Of course thats on a k-5 body that is often lens swapped 10 times a day for the last 2 years.

jeztastic · 10-31-2012, 04:09 PM

Phew thanks guys... Will wet clean it soon, see if that helps, but it sounds as if I have escaped. I have mostly primes, I do change lenses a lot.

Na Horuk · 10-31-2012, 04:15 PM

Yes, dust is a terrible curse on digital photographers. Especially if you use many different lenses, if you live in a maybe slightly dustier place...
There is also a Pentax tool for dust removal, it uses static I think, lovingly called the lollipop. You might want to try that before trying wet cleaning, since wet cleaning has a more dangerous reputation to it.

Col · 10-31-2012, 04:22 PM

Normal dust as suggested, could be a sticky pollen and require a wet clean. The sensor stain was more in the appearance of dried water streaks/droplets, showing a definite Umbra and Penumbra. My original K5 had a couple of lines of them that were about 1/6th of the frame.
FYI, complete frame

Crop

Another clue was that they were not on the outside surface of the sensor and the Dust Alert function would never show it.

10-31-2012, 03:44 PM	#1
jeztastic Veteran Member Join Date: Nov 2010 Location: Canterbury Photos: Gallery \| Albums Posts: 596	Is this the dreaded sensor stain? I've tried dust removal and a rocket blower to no avail... Serial no. 4272572

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10-31-2012, 03:59 PM	#2
Fontan Site Supporter Join Date: Jan 2011 Location: 5th floor Posts: 1,610	I think they are dusts. Wet clean it.

10-31-2012, 04:00 PM	#3
elliott Inactive Account Join Date: Dec 2008 Location: North Carolina Photos: Albums Posts: 1,720	Just looks like normal dust, the stains were more clustered.

10-31-2012, 04:00 PM	#4
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	It looks a lot like dust to me, but I don't have experience with stains (at least, not that I know of)

10-31-2012, 04:04 PM	#5
imtheguy Site Supporter Join Date: Mar 2009 Location: Virginia Beach Photos: Gallery \| Albums Posts: 2,950	I have gone through 2 bodies with confirmed stains and agree with above they always seem clustered as in a "string of pearls" the descriptive name someone coined for the issue. I have also had similar dots that took 3 or more wet cleanings before all were gone. Of course thats on a k-5 body that is often lens swapped 10 times a day for the last 2 years.

10-31-2012, 04:09 PM	#6
jeztastic Veteran Member Join Date: Nov 2010 Location: Canterbury Photos: Gallery \| Albums Posts: 596 Original Poster	Phew thanks guys... Will wet clean it soon, see if that helps, but it sounds as if I have escaped. I have mostly primes, I do change lenses a lot.

10-31-2012, 04:15 PM	#7
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	Yes, dust is a terrible curse on digital photographers. Especially if you use many different lenses, if you live in a maybe slightly dustier place... There is also a Pentax tool for dust removal, it uses static I think, lovingly called the lollipop. You might want to try that before trying wet cleaning, since wet cleaning has a more dangerous reputation to it.

10-31-2012, 04:22 PM	#8
Col Veteran Member Join Date: Apr 2007 Location: Stansted Essex Photos: Gallery Posts: 614	Normal dust as suggested, could be a sticky pollen and require a wet clean. The sensor stain was more in the appearance of dried water streaks/droplets, showing a definite Umbra and Penumbra. My original K5 had a couple of lines of them that were about 1/6th of the frame. FYI, complete frame Crop Another clue was that they were not on the outside surface of the sensor and the Dust Alert function would never show it.