Internal Focus; Manual Focus Override F-Mount Lens/FX Format, Aperture Range: f/1.4 to f/16. Maximum Reproduction Ratio : 0.13x Nano Crystal Coating; Rounded 9-Blade Diaphragm Meet the new standard by which all short telephoto lenses will be measured against, the world's first full-frame 105mm with an f/1.4 aperture. The Nikon AF-S NIKKOR 105mm f/1.4E ED Lens is a marvel of optical precision, distortion correction and craftsmanship. It's fast maximum aperture make this an ideal optic for available light?recommended for portraiture or indoor sports. This short telephoto lens can defocus backgrounds with painterly finesse and isolate subjects with three-dimensional fidelity. For those seeking the ultimate in image quality in photography or videography, there's no close second.FEATURES:World's first full-frame 105mm with an f/1.4 maximum apertureA marvel of optical precision, distortion correction and craftsmanshipChromatic aberration, ghosting and flare is minimized by three Extra-Low Dispersion (ED) elementsNano Crystal Coat (N) outperforms conventional antireflection coatings over a broad wavelength range for maximum contrast