The aperture ring is stiff. Since I was using it by changing the f-stop on the camera body, it didn't cause any practical problems for me personally. A lens filter is included. There is a feeling of use overall, and considering the above points, this is being sold as a defective item, so it is priced for disposal. Please purchase only if you understand the condition. Please note that price reductions will be made at my discretion, so please refrain from negotiating a price reduction.