Tamron SP 90mm F2.5 52BB with Nikon F-mount Adaptall Full-frame compatible manual focus prime lens - Lens Type: Prime lens - Focal Length: 90mm - Maximum Aperture: F2.5 - Mount Type: Nikon F-mount Adaptall Other features... Old lens, with front lens cap, with rear lens cap Shooting confirmed with Nikon D300, no problems Focus ring operation: No problems Dust and debris present, but no visible mold or haze, stored in a dehumidified cabinet The features of this lens are its now-rare metal body, the satisfying weight, the cool touch of the metal, and the precision of the focus ring, allowing you to enjoy manual focusing. With a 90mm focal length and a bright F2.5 aperture, and the F-mount, it's a lens that's easy to use for portraits. You can feel Tamron's commitment from the film camera era. Can be used the same as Nikon F-mount AI compatible lenses. Please understand that this is a used item before purchasing. Thank you for your consideration.