This is a SIGMA 50-100mm zoom lens with an EF mount. I purchased it several years ago and have used it a few times. The original box, case, and an 82mm lens protector filter (showing signs of use) are included as extras. As you can see from the photos, there are minor scratches and marks on the tripod mount, but there are no noticeable scratches, and I think it's close to being in good condition. I'm an amateur, but I couldn't find any dust or debris inside the lens. The operation of each ring, etc., is also problem-free. I am looking forward to your purchase, understanding that this is a used item. *I changed the photo because the reflection of light in the 5th photo looked like dust.