Canon 75-300mm ultrasonic zoom lens. It appears to have mold. I am listing it as a junk item because I don't know how to use it. The size may be different. I am a novice and don't know anything about it. It has been stored at home and hasn't been used for a while. No returns accepted. - Brand: Canon - Model: EF 75-300mm f/4-5.6 III USM - Focal Length: 75-300mm - Features: Ultrasonic Motor (USM) Thank you for viewing.