Anyone else have this problem (k5) Dots.

Scootatheschool1990 · 07-25-2014, 11:20 PM

Check out the image, anyone else have this? can you explain what's happened?

Attached Images

i83N · 07-25-2014, 11:37 PM

I see dirt on sensor, two big transparent circles.
But those line of dots is something new.

Richard Briggs · 07-25-2014, 11:38 PM

Presume you mean the shaded blotch bottom centre? I get this on my K5. Depends on lens and aperture. I've always put it down to dirt on the lens or mirror or sensor. Basically, I assume a good clean is needed.

**mike.hiran** · 07-25-2014, 11:40 PM

Could the red dots be a card issue? I remember some people getting some weird artifacts and when they changed cards it took care of it. If you haven't tried it, I'd give that a shot.

stevebrot · 07-26-2014, 07:36 AM

That is truly interesting. As noted, I would rule out the card first.

Steve

**crewl1** · 07-26-2014, 08:15 AM

No I have never seen the vertical lines of dots.
If this is new on a computer, card and software that never showed them before then I would suspect the sensor going bad.
If any of the above have changed then I would look there first.
Also if you want to post the file somewhere we can try opening it on our own systems to see if it is in the image file vs some process issues with your software / system.

**marcusBMG** · 07-26-2014, 08:31 AM

Crikey.
have you tried different lenses? Changing settings (jpg/raw, low/high res)? Is it there all the time?
Guess: sensor or internal processing (PCB).

vonBaloney · 07-26-2014, 08:59 AM

That's pretty weird -- I'd also just want to rule out the program you are using to view it or your RAW decoder.

**todd** · 07-26-2014, 09:04 AM

I'd also try a different card reader to transfer your images.. I had issues with images getting messed up that went away after I switched to a different card reader... My images didn't have this particular problem shown here, but other weird corruption...

FrankC · 07-27-2014, 12:17 PM

If you look at the lines, there's a pattern of a single column followed by another single column, followed by two columns that repeats throughout the frame. I doubt that the sensor itself would fail in this way, nor does it seem likely that a SD card would record in this manner either. I think it's in the equipment used to transmit the data from the card to your computer. Looking at images from another camera will confirm whether the problem is being generated by your computer (e.g. video card, mobo, USB connector, etc...).

Adam · 07-27-2014, 12:46 PM

Does it look the same in-camera?

Culture · 07-28-2014, 03:57 AM

I use linux ubuntu (derivative), and sometimes I get random lines like this. I have not been able to fix it and I dont even know the cause.

**Digitalis** · 07-28-2014, 04:03 AM

I have seen dots like this in samples from Foveon sensors - notably the Quattro sensor. Does this pattern show up in camera generated JPG files?

I connect the camera to USB to transfer raw images - I rarely take the card out of my cameras, unless I need to change them in the field.

rawr · 07-28-2014, 05:46 AM

Pls post an image (JPG) with full EXIF intact, if you can.
Or run your DNG through EXIFTOOL and post the text of the results.

I'd be interested in finding out the temperature of the camera body, for one thing.

Scootatheschool1990 · 07-29-2014, 02:06 AM

Sorry guys. I am changing desks at the moment. I'll upload the raw when I get the new desktop rolling

07-25-2014, 11:20 PM	#1
Scootatheschool1990 Veteran Member Join Date: Jun 2012 Location: Boise Idaho Photos: Gallery \| Albums Posts: 466	Anyone else have this problem (k5) Dots. Check out the image, anyone else have this? can you explain what's happened? Attached Images

07-27-2014, 12:46 PM	#11
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,609	Does it look the same in-camera? Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
has anyone else had this problem?	RubyT	Pentax K-5 & K-5 II	2	05-15-2011 03:14 PM
Manfrotto Rebate - Anyone Else Have a Problem?	Glarus	Pentax Camera and Field Accessories	5	01-19-2011 05:33 AM
Anyone else have this DA* 50-135mm problem?	PentaxPoke	Pentax SLR Lens Discussion	104	03-30-2010 01:31 AM
Anyone else with this problem? K200 freezes	anca	Pentax DSLR Discussion	16	10-27-2008 06:31 PM
Problem with brand new K10d..wondering if anyone else has seen this..	joekr	Pentax DSLR Discussion	17	01-23-2008 01:29 PM

07-25-2014, 11:37 PM	#2
i83N Veteran Member Join Date: Mar 2009 Location: Lithuania Photos: Gallery Posts: 1,203	I see dirt on sensor, two big transparent circles. But those line of dots is something new.

07-25-2014, 11:38 PM	#3
Richard Briggs Senior Member Join Date: Jul 2013 Posts: 106	Presume you mean the shaded blotch bottom centre? I get this on my K5. Depends on lens and aperture. I've always put it down to dirt on the lens or mirror or sensor. Basically, I assume a good clean is needed.

07-25-2014, 11:40 PM	#4
mike.hiran Site Supporter Join Date: May 2007 Location: portland Photos: Albums Posts: 1,491	Could the red dots be a card issue? I remember some people getting some weird artifacts and when they changed cards it took care of it. If you haven't tried it, I'd give that a shot.

07-26-2014, 07:36 AM	#5
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	That is truly interesting. As noted, I would rule out the card first. Steve

07-26-2014, 08:15 AM	#6
crewl1 Site Supporter Join Date: Jul 2010 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 9,807	No I have never seen the vertical lines of dots. If this is new on a computer, card and software that never showed them before then I would suspect the sensor going bad. If any of the above have changed then I would look there first. Also if you want to post the file somewhere we can try opening it on our own systems to see if it is in the image file vs some process issues with your software / system.

07-26-2014, 08:31 AM	#7
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,870	Crikey. have you tried different lenses? Changing settings (jpg/raw, low/high res)? Is it there all the time? Guess: sensor or internal processing (PCB).

07-26-2014, 08:59 AM	#8
vonBaloney Pentaxian Join Date: Oct 2011 Location: Albuquerque, NM Posts: 6,029	That's pretty weird -- I'd also just want to rule out the program you are using to view it or your RAW decoder.

07-26-2014, 09:04 AM	#9
todd Site Supporter Join Date: Jul 2008 Location: Arizona Photos: Gallery Posts: 6,802	I'd also try a different card reader to transfer your images.. I had issues with images getting messed up that went away after I switched to a different card reader... My images didn't have this particular problem shown here, but other weird corruption...

07-27-2014, 12:17 PM	#10
FrankC Veteran Member Join Date: Dec 2011 Photos: Gallery Posts: 322	If you look at the lines, there's a pattern of a single column followed by another single column, followed by two columns that repeats throughout the frame. I doubt that the sensor itself would fail in this way, nor does it seem likely that a SD card would record in this manner either. I think it's in the equipment used to transmit the data from the card to your computer. Looking at images from another camera will confirm whether the problem is being generated by your computer (e.g. video card, mobo, USB connector, etc...).

07-28-2014, 03:57 AM	#12
Culture Veteran Member Join Date: Sep 2011 Location: Vaasa Photos: Gallery \| Albums Posts: 818	I use linux ubuntu (derivative), and sometimes I get random lines like this. I have not been able to fix it and I dont even know the cause.

07-28-2014, 04:03 AM	#13
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,695	I have seen dots like this in samples from Foveon sensors - notably the Quattro sensor. Does this pattern show up in camera generated JPG files? I connect the camera to USB to transfer raw images - I rarely take the card out of my cameras, unless I need to change them in the field.

07-28-2014, 05:46 AM	#14
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Pls post an image (JPG) with full EXIF intact, if you can. Or run your DNG through EXIFTOOL and post the text of the results. I'd be interested in finding out the temperature of the camera body, for one thing.

07-29-2014, 02:06 AM	#15
Scootatheschool1990 Veteran Member Join Date: Jun 2012 Location: Boise Idaho Photos: Gallery \| Albums Posts: 466 Original Poster	Sorry guys. I am changing desks at the moment. I'll upload the raw when I get the new desktop rolling