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09-16-2008, 03:41 PM   #1
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Is my K10d broken too?

Is this normal, or should I so something about it? There's a blue band in the top 12 pixels in every image shot in dark with high ISO. Also a stuck pixel, but that should be quite normal?



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09-16-2008, 06:39 PM   #2
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The stuck pixels are common, so no real problem there.

I've checked a number of my images, taken with a K10D, that have very dark borders and even at 400% there is no sign of any of the banding shown in your example.

I notice that your photo is RAW (PEF):

1. Does it show up in the converted JPG version?
2. Have you tried a similar shot using DNG rather than PEF?
3. Have you tried a different memory card?

If the band shows up in all formats and another SD card, then it would be worth getting the camera checked by Pentax Service.

Good luck!
09-16-2008, 07:38 PM   #3
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Also try another program for the conversion.
It won't take care of the hotspot, however I've seen where some programs don't quite process a raw file right leaving a line or something in the finished image.
09-16-2008, 08:48 PM   #4
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Bad SD Card?

Try a reformat...
Menu --> Setup --> Format
Steve

09-16-2008, 11:57 PM   #5
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I had a similiar issue when using UFRaw a while back, but recent updates seem to have fixed that, except my banding was white/grey. My vote here is Bad SD card or your conversion software
09-17-2008, 12:05 AM   #6
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The blue band can be seen on the camera screen when viewing photos and it's there even when I'm taking a photo without an SD card, jpeg and raw. I don't think it's the card or the computer software.
09-17-2008, 12:54 AM   #7
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The same thing happens to my K100D, but only if I do a 600 second exposure.
09-17-2008, 01:13 AM   #8
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I got this body yesterday and it's used, there's no warranty left. The band seems to be there whenever I take a shot in dark with ISO 1600 and sometimes even at iso 400.

If the banding is there on my body and not on others, the body is defective? There's no Pentax Finland that I could call and ask.

09-17-2008, 01:55 AM   #9
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Nothing to worry IMO

K10D has a usable image size of 3872 x 2592, Your images show 3896 x 2616- so Your converter shows also the not exposed margins of CCD which are mostly affected by non-photographic effects (uneven heat distribution etc.) If Your only problem is 12 pixels in upper part then most RAW converters eliminate just those 12 rows for Your convinience ((2616-2592)/2 = 12)
Best and happy shooting, JR
And most RAW converters automatically map out hot/dead/stuck pixels- and loosing 1 pixel out of 10.2 million is not a dealbreaker IMO :-)
09-17-2008, 06:14 AM   #10
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QuoteOriginally posted by Reps Quote
K10D has a usable image size of 3872 x 2592, Your images show 3896 x 2616- so Your converter shows also the not exposed margins of CCD which are mostly affected by non-photographic effects (uneven heat distribution etc.) If Your only problem is 12 pixels in upper part then most RAW converters eliminate just those 12 rows for Your convinience ((2616-2592)/2 = 12)
I have taken pics at this 3896 x 2616 that don't have the band. So, my raw converter is to blame about this? Why's there extra pixels then at all? As I said, the blue band is visible on the camera screen too, also on jpegs.
09-17-2008, 06:52 AM   #11
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OK, in the evening I will check out my K10D low-light shots on that issue and let You know.
Best, JR
09-17-2008, 09:51 AM   #12
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Question to Pasipasi

All the other effects etc. apart- what is Your main RAW converter (eg seen at the original post images) and are You sure that no light enters via viewfinder during those exposures (eg is the viewfinder covered with something)?
Best, JR
09-27-2008, 02:55 AM   #13
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Yes it is...

I've had the same problem with my K10D immediatly after purchase. As I take many pictures in low light conditions (gymnastic halls, shows, ...) I took the camera imediatly back to the shop . After 1 week I got it back repaired (no information on what they did, but it was the same body) and the stripe was gone...
Apart from sometimes off-focus pictures in low light conditions I'm very hapy with my K10D...
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