The Canon EF 100-300mm zoom lens offers a wide range of focal lengths and excellent image quality. - Brand: Canon - Model Name: EF 100-300mm - Filter Diameter: 58mm - Focal Length: 100-300mm - Maximum Aperture: f/1-5.6 Thank you for viewing. There is balsam separation on the front element, and some dust on the rear element. Operation is not a problem, but the 58mm UV filter is warped and cannot be removed. Therefore, this item is listed as junk. It can be used as is, but we ask that you purchase this item if you are able to remove the UV filter by breaking it, or if you can use the UV filter as is. No claims and no returns are accepted.