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09/27/2005 04:32:20 AM · #1 |
I exposed the sensor to the lens cap for 30 second ISO 100 (don't ask why).
I took the resulting black pic, desaturated it, and bumped up levels and contrast a couple of times.
Are those little dots Hot Pixels, or reflecting dust?
I know that in 8 000 000, at least some need to be bad, but have I not got quite a lot of them?
Looking closer, I'm sure I can make out the Southern Cross lol.
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09/27/2005 04:39:01 AM · #2 |
The aliens are trying to tell us something.
What's that XXXOOROBBASGGG? Are the children stuck down the old abandoned mineshaft?
Message edited by author 2005-09-27 04:39:11.
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09/27/2005 04:43:29 AM · #3 |
You should change your name to white dot.
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09/27/2005 06:21:37 AM · #4 |
Yes, those are hot pixels, and it is normal. Remember that you've gone to an extreme with levels, you'd never need ot bring up shadows that severely.
Was long exposure noise reduction on? If not, try turning it on and repeat the test. It essetially subtracts a dark frame (which is what you just shot) from the image and in this case should eliminate the bright pixels.
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09/27/2005 06:26:26 AM · #5 |
Does anyone else see the Virgin Mother Theresa Presley in there?
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09/27/2005 06:30:36 AM · #6 |
zarniwoop: Don't drink and Type ;0)
Thanks Kirbic, It doesnt show up in normal situations at all. Noise reduction is off, I was shooting Lightning , so I didn't want too long a gap between exposures. I'll test it though. |
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09/27/2005 06:42:35 AM · #7 |
If you don't want to use the in-camera noise reduction, you can do it yourself in Photoshop using the dark frame subtraction method.
Short PS how-to here |
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