Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
10-11-2008, 02:46 PM   #1
Senior Member




Join Date: Jan 2008
Location: Madison (Verona), WI
Photos: Gallery
Posts: 144
Is this dust on my K200D sensor?

There is a spec in my viewfinder in the same relative position as in my pictures, but I'm guessing that's just coincidence. I'm guessing this is a pesky dust spec on my sensor? I've tried the body dust removal but doesn't seem to be working. Would you buy a blower and try that?



10-11-2008, 02:51 PM   #2
Veteran Member
kkoether's Avatar

Join Date: Jul 2008
Location: Huber Heights, OH, USA
Photos: Gallery | Albums
Posts: 576
I would think if you see it in the viewfinder and on the picture that it would be on the lens. Sensor dust would not be visible in the viewfinder.
10-11-2008, 02:52 PM   #3
Senior Member




Join Date: Jan 2008
Location: Madison (Verona), WI
Photos: Gallery
Posts: 144
Original Poster
I just checked. It's there no matter which lens I use. And in the same position.
10-11-2008, 02:57 PM   #4
Veteran Member
kkoether's Avatar

Join Date: Jul 2008
Location: Huber Heights, OH, USA
Photos: Gallery | Albums
Posts: 576
It sounds like it may be dust on the sensor. I've not had to clean mine yet so I cannot offer any words of wisdom on cleaning it. Maybe someone with more experiance will jump in with the info you need.

10-11-2008, 02:58 PM   #5
Senior Member




Join Date: Jan 2008
Location: Madison (Verona), WI
Photos: Gallery
Posts: 144
Original Poster
I'm actually seeing two specs now. Must be sensor dust, huh?

10-11-2008, 03:03 PM   #6
Veteran Member




Join Date: Aug 2008
Location: London
Photos: Gallery
Posts: 418
looks like there are quite a few all round the image (small ones).

Get a giottos rocket blower. Completely sorted my k20d in seconds
10-11-2008, 04:39 PM   #7
Senior Member




Join Date: Oct 2008
Location: Chicago, IL
Posts: 199
Yeah, the Giotto Rocket Blower should be able to take care of that.
10-11-2008, 06:19 PM   #8
Site Supporter
SpecialK's Avatar

Join Date: Dec 2006
Location: So California
Photos: Gallery
Posts: 14,912
Looks like yellow arrows to me. A rocket blower should handle those, and the gray blobs next to them.

10-11-2008, 07:47 PM   #9
Veteran Member
MoiVous's Avatar

Join Date: Sep 2008
Location: Adelaide, South Australia
Photos: Gallery
Posts: 671
Have you tried the Dust Alert sensor test to confirm this before you play with the blowers etc?

Page 231 of the manual tells you how to do it...
  • Use a DA etc lens (needs auto aperture)
  • Leave the lens in AF mode
  • In the SetUp menu choose Dust Alert and press the -> on the 4 way control
  • Aim the camera at a clean white wall and release the shutter
  • Press Ok to view the dust

The pages after the Dust Alert tell you how to clean it

Hope you get rid of your dust problem....
10-12-2008, 08:19 AM   #10
Senior Member




Join Date: Jan 2008
Location: Madison (Verona), WI
Photos: Gallery
Posts: 144
Original Poster
QuoteOriginally posted by MoiVous Quote
Have you tried the Dust Alert sensor test to confirm this before you play with the blowers etc?

Page 231 of the manual tells you how to do it...
  • Use a DA etc lens (needs auto aperture)
  • Leave the lens in AF mode
  • In the SetUp menu choose Dust Alert and press the -> on the 4 way control
  • Aim the camera at a clean white wall and release the shutter
  • Press Ok to view the dust

The pages after the Dust Alert tell you how to clean it

Hope you get rid of your dust problem....
Very much appreciated that. Just performed that function and sure enough those two specs turn up. Too much changing lenses yesterday under fall foliage trees, plus, the pollen count is unbelievably high (wife constantly sneezing - going to rename her Rudolf here soon).

Thanks.
10-12-2008, 09:06 AM   #11
Veteran Member
tomtor's Avatar

Join Date: Apr 2008
Location: Netherlands
Posts: 382
Clearly dust. Dust spots get always smaller and sharper if you use a smaller aperture. Just test it at F16 or F22 by taking an image of the bright sky in manual focus and focussed at a small distance. All you should see is a grey/blue image with dust specks.

A good blower (the Giotto is good, it filters the air before blowing it into your camera) works fine in most cases (point the opening of the camera down when blowing so that the gravitation helps slightly getting the dust out instead of just moving it around.

A device called Arctic Butterfly is another option but a lot more expensive. Start with the blower. The advantage of the Arctic Butterfly is that dust is attracted by the brush instead of just moved.
10-21-2008, 04:48 PM   #12
Senior Member




Join Date: Jan 2008
Location: Madison (Verona), WI
Photos: Gallery
Posts: 144
Original Poster
Thanks for the tips. I got a Giotto off Ebay for $15, just used at Voila - no dust on the Dust Alert. Thanks for the recommendation.
Reply

Bookmarks
  • 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!
camera, dslr, dust, photography, spec
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dust on Sensor yahmon Troubleshooting and Beginner Help 6 04-27-2010 03:58 PM
Sensor dust Pablom Troubleshooting and Beginner Help 24 04-10-2010 05:57 AM
dust on sensor or dust on lens 41ants Troubleshooting and Beginner Help 10 10-08-2009 10:28 AM
sensor dust(?), again tibbitts Pentax DSLR Discussion 1 10-02-2008 04:12 PM
dust behind sensor? jsundin Pentax DSLR Discussion 3 11-24-2006 09:51 AM



All times are GMT -7. The time now is 03:09 AM. | See also: NikonForums.com, CanonForums.com 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top