NIKKOR Z mount DX 16-50mm lens, aperture f/3.5-6.3, compact and high-performance. - Model Name: DX 16-50 - Aperture: 3.5-6.3 - Mount Type: Z Mount - Brand Name: NIKKOR Thank you for viewing. I am selling this lens because I received another lens after purchasing it as part of a lens set. It has been taken out only twice. *Size is Z mount. *This is the genuine lens included with the Nikon D50II. *As it is a genuine product, there is no dedicated box. The items in the photos are all that are included. Nikon Type...Standard