So the D800 is about the same as the 1ds3 then at low iso ...... big news item 'Nikon catches up with 4 year old Canon tehnology'
No, the 1Ds3 never had DR like the D800 does at low iso.
The 1ds3 outruns the 5DII which is just behind the D800 .....
Are you looking at the same camera?
Color Depth 24 bits
Dynamic Range 12 Evs
Low-Light ISO 1663 ISO
Color Depth 23.7
Dynamic Range 11.9
Low-Light ISO 1815 ISO
Color depth 25.3
Dyamic Range 14.4
Low-Light ISO 2853 ISO
Perhaps the most damning of all is the DR - as can be seen in the graph below.
In some of the other graphs, the D800 is close to a full stop better than either the 1Ds3 or 5D2.
That means the D800 at ISO 200 is generating images as good as the 5D2 at ISO 100.
This isn't "just a little bit better", it is significantly better and what we expected/wanted from the 5D3.