The 70-300mm f/4.5-6.3 Di III RXD Lens for Nikon Z from Tamron provides a popular telephoto zoom range for the full-frame Nikon Z-mount mirrorless cameras. This lens spans a useful short- to long-telephoto range and measures just 5.8" in length with a maximum diameter of 3", and it weighs just 1.2 pounds. It offers optical performance with aberration correction that delivers high image quality. Tamron's RXD stepping motor unit provides high-speed, high-precision, and quiet operation and takes full advantage of in-camera features including Sony's Fast Hybrid AF and Eye AF functions. Versatile telephoto zoom is designed for full-frame Nikon Z-mount mirrorless cameras and can also be used with APS-C models where it will provide a 105-450mm equivalent focal length range. RXD stepping motor unit provides high-speed, high-precision, and exceptionally quiet operation that takes full advantage of in-camera features including Sony's Fast Hybrid AF and Eye AF features plus direct manual focus. 15 elements in 10 groups with one LD (low dispersion) lens element precisely arranged to suppress axial chromatic and other aberrations that are likely to occur with telephoto zoom lenses. Compatible with in-camera shading, chromatic aberration, and distortion lens correction functions. Minimum focusing distance of 31.5" to suit working with close-up subjects. The rounded seven-blade diaphragm contributes to a pleasing bokeh quality. Camera-based lens firmware updates via dedicated TAMRON Lens Utility software.