Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
11-30-2013, 08:37 PM   #1
New Member

Join Date: Nov 2013
Posts: 3
Dark spots on photos K5 :(


I am having trouble with my K-5 , having two dark spots on right side of image . Are these sensor stains or dust on sensor ?? Any help is greatly appreciated.

Thanks in advance.

Attached Images
View Picture EXIF
PENTAX K-5  Photo 
11-30-2013, 08:43 PM   #2
Veteran Member
mrNewt's Avatar

Join Date: Nov 2011
Location: ON, RH
Posts: 2,170
Looks like dust spots... time to blow your K-5's sensor
11-30-2013, 08:53 PM   #3
Veteran Member
crewl1's Avatar

Join Date: Jul 2010
Location: Los Angeles, CA
Photos: Gallery | Albums
Posts: 9,797
Use one of these. Giottos Rocket Air Blower - (Large) 7.5" AA1900 B&H Photo
No canned air, it will spray gunk on your sensor.
11-30-2013, 09:11 PM   #4
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
Nothing to worry about by the looks of it. The sensor stains that I have seen on the web (and experienced myself ) show themselves as a string of string (often called a 'string of pearls').

11-30-2013, 09:47 PM - 1 Like   #5
Site Supporter
jatrax's Avatar

Join Date: May 2010
Location: Oregon
Photos: Gallery | Albums
Posts: 10,770
Dust. Do you have the dust removal system turned on?

Dust removal procedure in order:
  1. Use the camera dust removal system. There is a menu setting to turn on/off. If you have dust run this several times in a row and then check for dust again. I leave mine on "run on startup" and I think that is best so you don't have to worry about it.
  2. Use a 'rocket blower' or equivalent to blow off anything the shaker will not get rid of. Do not use compressed air or canned air. Some folks report it is OK to use canned air if you are careful, personally I'm not taking any chances but YMMV.
  3. Use a wet cleaning kit. This is the last resort, and on two cameras with over 25,000 actuations in all kinds of environments I've never had to use one yet. Get this if all else fails but don't go there unless you are sure you need it.
  4. Send in for professional cleaning. Pentax extended warranty (in the US) includes one 'free' cleaning. Not sure about anywhere else.

Easiest way to check for dust is to set your aperture to f/22 or so and take an image of the sky. Dust on the sensor is more visible at smaller apertures.
11-30-2013, 10:10 PM   #6
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,533
I've only had to use the wet treatment once on my K10d, which is somewhere over 20,000 exposures. I have it set to shake on startup as jatrax mentions.
11-30-2013, 10:55 PM   #7
New Member

Join Date: Nov 2013
Posts: 3
Original Poster

Thank you guys .. this was a relief ... I'll get it cleaned
12-01-2013, 03:14 AM   #8
Veteran Member
VisualDarkness's Avatar

Join Date: Nov 2011
Location: Uppsala, Sweden
Photos: Gallery
Posts: 4,441
Yeah, every person that changes lenses in the field will face that problem, way worse than that!

12-01-2013, 03:23 AM   #9
Senior Member

Join Date: Sep 2012
Location: Middle of England
Photos: Albums
Posts: 295
A tip for the rocket blower - give it a few good squeezes first. I have heard reports of people getting one and using it on the camera right away and getting little rubber bits blown all over the sensor.
12-01-2013, 05:34 AM   #10
Moderator PEG Judges
Kerrowdown's Avatar

Join Date: Aug 2008
Location: Highlands of Scotland.
Photos: Gallery
Posts: 32,646
QuoteOriginally posted by rameshbalda Quote
Are these sensor stains or dust
Look like dust to me, happy days getting blowing.
12-01-2013, 06:21 AM   #11
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 10,861
Just be careful what you use to blow on it! Using your mouth or a vacuum is a bad idea. You don't want to contaminate it even more, and you really dont want to cause condensation or mechanical damage.
The rocket blower should be pretty safe, lots of us are using it. That, and photoshop to remove the spots.
12-01-2013, 06:24 AM   #12
New Member

Join Date: Dec 2013
Posts: 1
i'm still learning
12-01-2013, 08:03 AM   #13
Loyal Site Supporter

Join Date: Jun 2009
Location: Tumbleweed, Arizona
Photos: Gallery | Albums
Posts: 5,107
I don't think that you need to go to the extreme of taking it somewhere and having it professionally cleaned. Most of the time its not necessary and it can get expensive at probably $50-$60 a whack. As everyone has indicated a rocket blower (about$10 mail order) is a good solution and it takes 2 minutes with really no skill involved. Just go to the cleaning menu - which lifts the mirror and opens the shutter (until you press the shutter release a second time) and use the blower to blow the dust off the sensor, without touching the sensor. Depress the shutter release again and you are all done. Tipping up the camera body and doing it upside down provides a path for the dust bunny to fall out of the camera will also help. That should solve 90% of the problem.

12-01-2013, 09:17 AM   #14
Veteran Member

Join Date: Oct 2007
Location: France
Photos: Albums
Posts: 804
QuoteOriginally posted by sterretje Quote
Nothing to worry about by the looks of it. The sensor stains that I have seen on the web (and experienced myself ) show themselves as a string of string (often called a 'string of pearls').
And are located near the center of the sensor
12-01-2013, 09:19 AM   #15
Veteran Member

Join Date: Oct 2007
Location: France
Photos: Albums
Posts: 804
Try to activate sensor cleaning at camera startup. It is located somewhere in the menus, I activated it and had never to clean sensor for 2 years - and I change lens frequently. It is not activated by default

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
pentax help, sensor, spots
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Those Black Spots on your Photos JeffJS Pentax DSLR and Camera Articles 7 12-08-2014 02:58 AM
K5 possible issue, dark banding in photos skid2964 Pentax K-5 7 09-29-2012 06:34 AM
Help! dark spots on my optical viewvinder Bossy Troubleshooting and Beginner Help 3 07-14-2012 09:25 PM
What are these spots on my photos? JoshRead Troubleshooting and Beginner Help 9 08-02-2010 08:29 AM
Dark spots in pics explr1 Photographic Technique 5 10-17-2008 12:00 AM

All times are GMT -7. The time now is 01:20 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]