Lens extension and retraction. Aperture blade opening and closing. The above functions have been confirmed. There appears to be mold and spots on the lens. Please consider this item as junk, assuming it requires maintenance. ※ Please note that this is a used item, and I do not possess the specialized knowledge of a camera store. Therefore, there may be oversights. Please assume that anything not explicitly mentioned has not been checked. We cannot provide support or warranty for any changes in condition or malfunctions after receipt. Please only purchase if you understand and accept these conditions. As this is a used item, returns are not accepted.