Nikon 500mm f/4E FL ED VR and 600mm f/4E FL ED VR lenses will be announced in next 30-60 days, according to the latest Nikon rumors.
Nikon has filed several lens patents for adding a fluorite element (FL) to their high-end super telephoto prime lenses. The next Nikon official announcement will be these two new FL lenses:
- Nikkor AF-S 500mm f/4E FL ED VR
- Nikkor AF-S 600mm f/4E FL ED VR
Stay tuned for more info.
Read more: Nikon Rumors