Top Result: Nikon 600mm f/4E FL ED AF-S VR

Pros

  • Lighter weight than the previous version
  • Extremely good optics
  • Faster focusing
  • Advanced VR

Cons

  • Still very heavy
  • Very expensive
  • No built in TC like the new Canon Supertele

Note From Jim

It's undoubtedly the most expensive lens you'll ever buy, but for a dedicated wildlife photographer, you can't beat Nikon's 2015 update to the 600mm f/4. It's lighter weight, faster focusing, and even better optically than the previous version. If you have the money, then definitely pick the 600.