Go Back   Steve's Digicams Forums > Digital SLR and Interchangeable Lens Cameras > Pentax / Samsung dSLR, K Mount Mirrorless

Reply
 
Thread Tools Search this Thread
Old Sep 1, 2006, 5:26 AM   #1
Member
 
Join Date: May 2006
Location: Hastings UK
Posts: 70
Default

I'm after a little advice or suggestions from you all if you don't mind. The attached picture is nothing special, but illustrates perfectly my problem.

If you look at it at first sight it might appear that the greyhound is chasing a ball, unfortunately it's not. I thought that this might be a large lump of dirt on the sensor so set about cleaning that, to no avail. This appaers in all pictures, but obviously the lighter the general baclground the more obvious it is.

Any suggestions anyone? Dom
Attached Images
 
dms25 is offline   Reply With Quote
Sponsored Links
Old Sep 1, 2006, 6:09 AM   #2
Senior Member
 
ennacac's Avatar
 
Join Date: Mar 2005
Posts: 4,198
Default

Looks like a small piece of dust to me.

Tom
ennacac is offline   Reply With Quote
Old Sep 1, 2006, 6:55 AM   #3
Guest
 
Posts: n/a
Default

dom, looks like dust. if you have clear skies, set the kit lens on f22, and take a pict of the clear sky or something slse that light in color.. d/l the image and open it at FULL size. that should tell you.. you WILL see the motes.

roy
  Reply With Quote
Old Sep 1, 2006, 7:04 AM   #4
Senior Member
 
Monza76's Avatar
 
Join Date: Jul 2004
Posts: 4,093
Default

It certainly looks like dust, you said you did some cleaning, what method did you use? Personally I have used a simple bulb blower but nothing more on my camera however there are many products out there for more aggressive cleaning, but beware.

I would also check with Pentax about the warranty, some owners have posted that Pentax will clean a sensor under warranty, I can't verify that but it is worth checking.

Finally, if you do plan to cleanthe sensor thoroughlyget an AC adapter for the camera or install freshly charged batteries. If your batteries go dead during cleaning the shutter will close and the mirror will drop, any foreign object in there paths will result in a very expensive repair job.

Ira
Monza76 is offline   Reply With Quote
Old Sep 1, 2006, 7:23 AM   #5
Member
 
Join Date: May 2006
Location: Hastings UK
Posts: 70
Default

Tom,Roy,Ira

Thanks for your help. I have gone through the suggested procedure for cleaning the sensor, using a hand blower only, no compressed air, but to date have not shifted it.

I'm going to try again however as I would like thiis cleared prior to a weeks vacation in about a week, when I will obviously want to have the camera with me. However if I can get no joy then it looks as if I may need to invoke the Pentax warranty. As the camera is only five months old I can't see them raising too much fuss about that.

Dom
dms25 is offline   Reply With Quote
Old Sep 1, 2006, 7:49 AM   #6
Guest
 
Posts: n/a
Default

dom,
i had pentax clean mine when it was new. mailed it and had it back in 6 days. i think that was a fluke tho. hopefully you have a rep near you.. when you are ready to really clean it yourself let me know. it's real easy..

roy
  Reply With Quote
Old Sep 1, 2006, 7:54 AM   #7
TDN
Senior Member
 
TDN's Avatar
 
Join Date: Jun 2006
Posts: 1,288
Default

Monza76 wrote:
Quote:
I would also check with Pentax about the warranty, some owners have posted that Pentax will clean a sensor under warranty, I can't verify that but it is worth checking.
I can verify that, at least in belgium dust falls under the pentax 2 year warranty.

TDN is offline   Reply With Quote
Old Sep 1, 2006, 8:10 AM   #8
Member
 
Join Date: May 2006
Location: Hastings UK
Posts: 70
Default

Roy

Sadly I don't think that they (Pentax) are that efficient over here, the general routine appears to run along the lines of package camera, send to Slough (praying in the meantime that the royal mail don't lose it) wait for them to clean/repair it, wait for them to send it back. As I go away a week tuesday I don't think I'll risk sending it back, unless they do a carry in service in which case I'll make the effort to go there personally.

In the meantime I'm about to commence cleaning again.

Dom
dms25 is offline   Reply With Quote
Old Sep 1, 2006, 9:32 AM   #9
Senior Member
 
nznhut's Avatar
 
Join Date: Nov 2004
Posts: 303
Default

Here is a pretty good article on the subject:

http://www.cleaningdigitalcameras.com/

Personally, I have used the technique of using a high quality artists brush, thoroughly cleaned, and using water with a drop or two of Photoflo in it.

I posted this previously, and it has been excellent.

http://www.stevesforums.com/forums/v...t=sensor+clean
nznhut is offline   Reply With Quote
Old Sep 1, 2006, 9:49 AM   #10
Senior Member
 
ennacac's Avatar
 
Join Date: Mar 2005
Posts: 4,198
Default

I second the artists brush, it is fast and the dust is no longer there, but it will not remove anything that is actually stuck to the sensor.

Tom
ennacac is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 1:51 AM.