I have confirmed that the internal feather opening and closing mechanism is functioning. There is mold and dirt visible on the lens. ※ Please note that this is a used item, and I do not possess the specialized knowledge of a camera shop. Therefore, there may be oversights. Please assume that anything not mentioned has not been checked. I cannot provide support or warranty for any changes in condition or malfunctions after receipt. Please only purchase if you understand and accept this. As this is a used item, returns are not accepted.