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by brocot on Wed Jan 28, 2009 10:09 pm
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brocot
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by mikephotog on Wed Jan 28, 2009 10:16 pm
It is probably residual light, if that is the right term, light that is still left in the sky that the eye does not pervcieve. I've often had that result, unless the image was taken very late at night in which case I have achieved a black sky. I don't think it is light pollution (high ambient urban light) as I doubt this would photograph so blue.
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by Mitchell on Wed Jan 28, 2009 10:25 pm
Warning: technical answer-
Your eye has two receptors for light, rods and cones. Cones are used in bright light and provide colour vision. Rods are used in dim light and don't give colour vision.
The night sky is actually blue (the small amount of light is still scattered to give blue as in daylight) but as it is so dim you are using your rods to see it, and therefore you do not perceive any colour...
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by aim54x on Wed Jan 28, 2009 10:27 pm
Yep I have noticed the same problem at times. I tend to underexpose my night shots a little to they look closer to what my eyes see rather than the camera sees.
Anyone have a better method?
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by brocot on Wed Jan 28, 2009 10:34 pm
So, the pictures are no mistakes, (failed ?) 
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by seeto.centric on Thu Jan 29, 2009 2:17 am
yeah i've noticed this too with high ISO's & night shots, but sometimes there's a bit of cloud floating around and it adds to the image. usually i just null it out a bit in RAW.. playing around in curves (which i recently started toying around with), or just live with it
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by brocot on Thu Jan 29, 2009 3:10 am
seeto.centric wrote:yeah i've noticed this too with high ISO's & night shots, but sometimes there's a bit of cloud floating around and it adds to the image. usually i just null it out a bit in RAW.. playing around in curves (which i recently started toying around with), or just live with it
-julian
I made som adjustments in Lightroom, you're right More realistic, less details ? 
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by colin_12 on Fri Jan 30, 2009 9:46 pm
Yes this looks more natural. I find that if left in apature priority when in low light you get slight over exposures or compensation from the camera.
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by Ben.bb on Sun Feb 01, 2009 1:00 am
I was in a place in Czech republic called cesky krumlov and it had a similar blue sky to those at night which was visible to the naked eye, so it could possibley be light pollution or just a cool looking blue sky!
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