Price drops: 22000 → 21750 → 21500 → 21250 → 21000 I purchased this used about three years ago. It was a very clean item. I used it about once a month, mainly for shooting my child's club activities in the gym. As my child has grown, the frequency of use has decreased, so I am selling it. I will inform you about the condition of the product and any points of concern. Images 1-8: I have handled it with care, so there are some scratches from use, but there are no noticeable scratches from bumping or sharp objects. Images 9 and 10: I think there may be some dust and debris. It has been stored in a dehumidified storage, so there is no mold on the lens. There are scratches on the white circle in image 9. There are about 3 scratches. Images 11-13: I used a filter for protection. Filters of this size are quite expensive, so I bought a used, inexpensive one. It's an old model, and there is a separate filter that is originally suitable for this lens, so I recommend replacing it for those who pursue image quality. I myself am at the level of taking pictures of my child, so I didn't care at all and used it. The filter has scratches, but the lens is protected without scratches. The cap also has some scratches. Images 14 and 15: The mount side is also clean without mold. The cap is a Tamron cap. Images 16-18: The hood has also been used for shooting, so there are situations such as the manufacturer's name being erased. Although it is not visible in the photos, From the previous seller: The internal image stabilization makes a rattling sound when shaken, but it is not a malfunction and is a specification. That's just the way the lens is. The rattling stops when image stabilization is turned ON. There is no problem with shooting. I understood this and purchased it, but the sound is still there. I didn't mind it during shooting, so it wasn't a problem. The SIGMA 17-50mm F2.8 EX DC OS HSM is a high-performance zoom lens with a bright F2.8 aperture and optical image stabilization. - Brand: SIGMA - Model Name: 17-50mm F2.8 EX DC OS HSM - Focal Length: 17-50mm - Maximum Aperture: F2.8 - Optical Image Stabilization: Yes