The guys over at Zacuto have released their second video of their series that compares film cameras to the current lineup of DSLR cameras. In this video you will see how different ISOs compare across the various cameras tested. It's pretty interesting and this is about as thorough of a test you would probably ever care to run.
Zacuto Great Camera Shootout 2010 Webisode 2: How Sensitive Can You Get? from steve weiss on Vimeo.
Holy crap! *jaw drops* That low light footage with the D3s was amazing!
true.. nikon wins hands-down in the extreme low light tests.