Notice how on the Nikon website, they tote that it can shoot ISO 102,400 yet don't have any examples higher than 12800?
Basically means ISO 25,600 still looks like dog s***, while 51,200 and 102,400 are basically there just so nikon can say we have a camera that can shoot ten stops faster than ISO 100.
And from the examples they have on the nikon imaging website, if you look at the pictures where ISO 12800 would actually be used, you can see, they still look super noisy.
I bet as far as REAL improvement over the D3/700, it's only one stop. The D3 was the first camera that could actually shoot a kinda OK ISO 6400, the D3s is a kinda sorta OK ISO 12800.
I dunno... honestly, I think this should have been in the D4, and instead of getting a D3 with one stop better high ISO and cheesy video with retouch options stripped from the D5000, we should have gotten some sort of competition to Micro 4/3rds, or Nikon embracing the standard and making lenses and/or bodies for it.
Micro 4/3rds has the potential to becoming the linux of cameras. An open format with a standardized mount and flash system so the photographer can customize their cameras to their hearts content. Panasonic and Olympus have already gone in, and there are talks of Fujifilm joining in too.
For God's sake, now i'm talking about micro 4/3rds in a thread about a $5200 pro cam. Sh*t, the puffins were shot at ISO 12800, f/4 and almost 1/8000th of a second!