Old 07-20-2007, 04:43 AM   #1
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Default Not a good sign?

I was shooting pictures of the clouds of a thunderstorm last night (In the vain hope that one of the 3 second exposures would catch some lightning) and I noticed something that could be disturbing...
In every photo, there were white noise spots in EXACTLY the same place.
Wut's goin on in dis blanket!?
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Old 07-20-2007, 05:39 AM   #2
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Since your actual question lacks comprehension I can only guess as to what you are asking. It sounds like you are either having troubles with dust spots or grain. If you are interested in a quality response to your problem a more sufficient question and example would be helpful to those of us who are trying to interpret your problem to give you an answer.
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Old 07-20-2007, 06:11 AM   #3
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Sorry, I'm a bit tired - Long day!
I'm wondering if there's anything I can do to fix the problem, or if it's a sign of immenent yet slow failiure.
It's definitely not dust, it's noise...those darn little white squares...
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Old 07-20-2007, 06:18 AM   #4
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Could you post an example?
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Old 07-20-2007, 06:53 AM   #5
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Well, here are three of the shots I noticed it from. I sharpened it a little so the noise was a little more prominent...
Attached Images
File Type: jpg noise1.jpg (332.1 KB, 178 views)
File Type: jpg noise2.jpg (333.9 KB, 116 views)
File Type: jpg noise3.jpg (295.5 KB, 127 views)
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Old 07-20-2007, 07:49 AM   #6
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Wow, that's a LOT of dead pixels! Sometimes I notice one or two in an image, but I've never seen that many. Looks like you may need to send it in for servicing if it continues. In the meantime, the clone tool is your best friend.
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Old 07-20-2007, 08:39 AM   #7
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Quote:
Originally Posted by PLEzero
Since your actual question lacks comprehension I can only guess as to what you are asking. It sounds like you are either having troubles with dust spots or grain. If you are interested in a quality response to your problem a more sufficient question and example would be helpful to those of us who are trying to interpret your problem to give you an answer.
Technically, comprehension is on your end, not that of the person asking the question whom, seems to have known what he was talking about even if you didn't.




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Old 07-20-2007, 08:42 AM   #8
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Are the specks in every shot now? Or just those three second exposures at night? WHat ISO are you using?


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Old 07-20-2007, 11:43 AM   #9
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Quote:
Originally Posted by trainboysd40
In every photo, there were white noise spots in EXACTLY the same place.
Wut's goin on in dis blanket!?
They are called "Hot Pixels" every digital camera has them, some more then others. Yours seems to have more then I would be happy with.

Check this quick explanation of what a hot pixel is. Basically the longer the exposure the higher the ISO setting the more chance you will see hot pixels.


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Old 07-20-2007, 01:58 PM   #10
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Huh. Good call, Christine. I'd never heard of those; thanks for the link.

And thank you Joe, for pointing out the inherent defect in PLEzero's response. Sometimes being a smart@ss can turn around and bite you in the @ss, eh zero?
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