This is a used Nikon AF Nikkor 14mm f/2.8 ultra wide angle lens for full frame FX mount Nikons. This is an original AF-D type lens, so it may not be fully compatible with consumer level DSLR cameras, and is not AF compatible with FTZ adapters on Z cameras. Note that the Nikon website offers compatibility information. Front and rear caps are included. Serial number is 217721.