Very nice work Martin.

Evrything looks nice and tight - a higher res would be awesome
Do you know if the iso setting (between standard settings 100,200,400,800,1600) on the Nikon are software driven?
I've read that for best quality it's best to stick to the standard settings as they're hardware based and settings like iso1000 are really iso800 'pushed' by an internal 1.25x analog amplifier, and use of the amplifier introduces some noise.
Not that I could tell on your image!

Nice stuff
Doug