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Ok, here it is.
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A comparison of high ISO noise with 10 Nikon digital bodies.
All versions are available as original unchanged out-of-the-camera JPEGs.
Please check the "original" tab under the selected picture to access the original files.
All smaller versions like medium or large are heavily compressed by the pbase.com servers.
The WHY and HOW have been described here: http://www.nikoncafe.com/vforums/showthread.php?t=110075
or here: http://forums.dpreview.com/forums/read.asp?forum=1034&message=22756124
2007-04-08: added D70 files
..
enjoy,
Andy