Nikon today announced the development of AF-S NIKKOR 500mm f/5.6E PF ED VR lens. This lens is designed to be a “lightweight” 500mm prime lens for photographers who want something like that for their big, heavy, clunky DSLR camera. Similar as previous AF-S NIKKOR 300mm f/4E PF ED VR Lens. By design, a Phase Fresnel element reduces chromatic aberration introduced by traditional refractive elements, while also reducing the overall length required to achieve high focal length magnification. This usually results in a decrease in total number of lens elements, as well as in overall size and weight.
In the next several months of 2018, Nikon is expected to announced around three new cameras and 2 new lenses. At least one of these cameras will be Nikon full frame mirrorless cameras. Below are a list of rumored Nikon cameras and lenses to be announced in 2018.
According to trusted source from NR, Nikon is planning to announce a new AF-S NIKKOR 600mm f/5.6 PF lens in next several months, the announcement time is likely in this Summer, June to August timeframe.