http://imaging.nikon.com/lineup/lens/zoom/telephotozoom/af-s_200-500mmf_56e_ed_vr/spec.htm
The MTFs at 500mm look slightly better than the 100-400mm II at 400mm, and the UK list price is only £1179. At 2300g it is as heavy as a 300mm f/2.8 II, however, and I know which I would prefer to carry. But, Nikon has leapt ahead of Canon with a more affordable and longer zoom. We'll have to see whether it outperforms the Sigma 150-600mm C. I do hope that Canon comes up with a 500/5.6 prime for us birders.
The MTFs at 500mm look slightly better than the 100-400mm II at 400mm, and the UK list price is only £1179. At 2300g it is as heavy as a 300mm f/2.8 II, however, and I know which I would prefer to carry. But, Nikon has leapt ahead of Canon with a more affordable and longer zoom. We'll have to see whether it outperforms the Sigma 150-600mm C. I do hope that Canon comes up with a 500/5.6 prime for us birders.