http://emmanuelcoupe.wordpress.com/2012/04/04/nikon-d800-long-exposures-issues/
All of sudden I was struck by a galaxy of white little dots, appearing in smooth tonal areas like the water and sky. This effect was confirmed again and again in all the long exposures that I looked at. Starting with 30sec exposures that had the issue present in smaller amount all the way to 5 minutes exposures when the white dot syndrome would multiply by the hundreds.
http://emmanuelcoupe.files.wordpress.com/2012/04/dsc0629.jpg
http://emmanuelcoupe.files.wordpress.com/2012/04/dsc0629-100crop1.jpg
From what the photographer told me noise reduction was OFF. Mostly because it is unpractical to wait double the time of the exposure but also because for these rather short long exposures, this type of noise was not anticipated.
K. Vasilakis, one of the photographers who did the test shooti informed me that using RAWTherapee resolves the white dot issue without him noticing any degradation on the image quality.
Here is the link and it’s free: http://rawtherapee.com/
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