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08-25-2013, 05:20 PM   #1
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Ultimately, what do bad pixels mean?

Please review my gallery images, particularly the night shot. I have about 8 or 12 bright spots that I believe to be "dead" pixels. Is this a repair-able defect? With ~23000 shutter count, I have gotten a ton of use out of my trusty K-x, I was just wondering about the dead pixels.

MrThallid's Album: 1st Annual Festival of Color - PentaxForums.com

08-25-2013, 06:07 PM   #2
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The K-x supports dead pixel mapping. The supplied manual has instructions on how to enable it. Software like Lightroom automatically removes the dead pixels too.
08-25-2013, 08:26 PM   #3
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Those don't seem to be bad pixels, just hot pixels caused by long exposure, even new cameras have those and it is not a defect.
08-28-2013, 09:02 AM   #4
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thank you for the replies. I will try the dead pixel mapping and see what happens, but the explanation of hot pixel on long exposure makes sense.

08-28-2013, 12:26 PM   #5
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Hey,

Where do you see the dead pixels could you explain. I can't see ONE!.

Regards
08-29-2013, 06:15 AM   #6
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QuoteOriginally posted by Deedee Quote
Hey,

Where do you see the dead pixels could you explain. I can't see ONE!.

Regards
They may be better visible in the flickr gallery...
Grayslake 1st Annual Color Aloft Balloon Festival - a set on Flickr

there are 4 or 6 in the sky area and a few mid picture and into the field area.
08-29-2013, 08:09 AM   #7
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Looking at this one, half a second at 800ISO, I'm definitely saying run of the mill hot pixels, especially if it was a hot day. I believe Flickr must have stripped some EXIF data, because I don't see temperature listed.
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