Like most Canon guys, I read the Nikon press release
with a bit of yawn, but then I saw this:
Smaller, Lighter, Faster Telephoto
Nikon has also introduced the AF-S NIKKOR 300mm f/4E PF ED VR, the world’s lightest 300mm full-frame fixed focal length AF lens2, which is nearly 30% shorter and 1.5 lbs. lighter than its predecessor
. Extremely easy to handle and built to suit the needs of serious photographers in the field, the new 300mm f/4 lens utilizes Phase Fresnel optical technology to help correct chromatic aberration and reduce the overall size and weight of the lens
, making it easy to pack for any assignment. Capable of producing tack-sharp images and beautiful background blur at a distance, Nikon’s newest FX-format lens also features four and a half stops of VR image stabilization3, a VR Sport mode, VR tripod detection as well as several of the latest NIKKOR optical technologies including electromagnetic aperture control, a Silent Wave Motor for quiet AF operation, ED glass for further controlling chromatic aberrations and Nano Crystal Coat for superior image quality.
It sure sounds like a DO or DO-like lens.Update
: Yes, it is - here's the description from Nikon's lens page
Phase Fresnel (PF) lens elements effectively compensate for chromatic aberration and ghosting when combined with ordinary glass lens elements. The PF lens element is based upon the Phase Fresnel lens, which appears to have a series of concentric circles engraved onto it. Utilizing a Phase Fresnel lens element allows Nikon engineers to use fewer lens elements, resulting in a more compact and lightweight lens. Due to the characteristics of a PF (Phase Fresnel) lens that utilizes the photo diffraction phenomenon, when there is a strong light source within the frame or when light enters the lens from outside of the frame, ring-shaped colored flare may occur according to shooting conditions. This phenomenon can be minimized with “PF Flare Control” to be included in Capture NX-D (ver.1.1.0 or later). For more information, see software Help/manual. Capture NX-D is available from the Nikon website. Be sure to keep your software up to date.
It's interesting to see that they are using software to tame the flare issues.