Professional photographers make Nikkor lenses their lenses of choice. Nikon is committed to every aspect of lens manufacturing, maintaining clarity, sharpness, focusing accuracy, range and reliability.PRODUCT FEATURES:Superior image quality with a wide aperture of f/1.4;1.4-16 aperture range and 1: 1.4 aperture ratio;62 degrees Picture angle;CRC close-range correction;Automatic diaphragm type.