This is what Nikon say about the lens in the press release: "The 105mm f/1.4E is a fast lens with endearing character, providing stellar optical performance, even in the peripherals. Sharp rendering is attained for shooting distant subjects throughout the aperture range – from maximum aperture to being stopped down by several stops. Gradual alteration from the focal plane helps render subjects in high-fidelity with a natural depth, giving colorful portraits and landscapes that little bit of extra “pop” to help create a truly distinct image. The AF-S NIKKOR 105mm f/1.4 is also an excellent choice for low-light photography, as its large maximum aperture allows photographers to shoot at the fastest possible shutter speeds. Additionally, this lens can reproduce point light sources faithfully without sagittal coma flare, even on the edges of the frame.
Masterful Lens Construction
Decades of precision, knowledge and experience are put forth into every NIKKOR lens, and the AF-S NIKKOR 105mm f/1.4E ED is an exceptional example of brilliant craftsmanship and Nikon technologies merging. Packed with the latest advanced optical innovations, the 105mm f/1.4 features Nikon’s electromagnetic aperture control technology for consistent exposures, even during high speed continuous shooting.2
On the outside, solid build quality is well-balanced for all-day shooting, while the lens is sealed and gasketed to resist dust and moisture. Additional Fluorine coatings are used on the front and rear elements, so that smudges, dirt or moisture are easily removed. Inside the lens, the optical formula consists of 14 elements in nine groups, which include three ED glass elements. A 9-blade diaphragm further helps to create a circular, pleasing out of focus area. The lens also features Nikon’s Nano Crystal Coat technology to significantly reduce instances of ghosting and flare."