The 70-300mm F/4.5-6.3 Di III RXD (Model A047Z) for Nikon Z mirrorless cameras is a telephoto zoom lens designed and created so photographers of all skill levels can enjoy high quality images comfortably. It achieves the world's smallest size and lightest weight, coming in at 5.9 in. long with a maximum diameter of 77mm, and weighing just 20.5 oz. With special emphasis on resolving power, Tamron has deployed special lens elements appropriately arranged to correct chromatic aberration, generally very strong in a telephoto lens, as well as other aberrations. Users can enjoy high-resolution images combined with the stunning bokeh qualities that are achievable only with a telephoto lens. The lens also incorporates the RXD (Rapid eXtra-silent stepping Drive) unit, a high-speed precision AF drive system that is remarkably quiet. The 70-300mm is a versatile lens for photographing landscapes, sports and other action, pets and wildlife and more. The lens also demonstrates its potential for portrait shooting, casual snapshots and scenarios that require you to be mobile and shoot handheld, like sporting events. With the Nikon Z-mount version, users can employ the dedicated TAMRON Lens Utility software. This feature enables users to easily update the lens to the latest firmware themselves, without going through the camera. On the firmware information screen, users can confirm that their lens has the latest version and perform an update if newer firmware is available. Designed for full-frame, the lens is at home on APS-C mirrorless cameras and provides a 105-450mm equivalent field-of-view. International Version with 1 year seller warranty; warranty is managed directly by the seller instead of the manufacturer and requires contacting customer service.