Some test shots with the Nikkor AF-S 200-400/f4.0. First round with D7100 and second round using the D800.

 

First round D7100

Nice conditions for testing the lens first time, some bright sun and good light for keeping ISO low.

 

Second round D800

Early morning hours and not much sun, therefore ISO was mainly at 1600 during all shots.

 

Third round D7100 and D800

Wow, fantastic performance.