Lens extension and retraction Aperture blade opening and closing operation The above have been confirmed. I don't think there is any mold on the lens. Even if I move the aperture linkage lever, the aperture blades do not move, but they open and close with the aperture ring. ※ Please note that this is a used item, and I do not have the specialized knowledge of a camera store, so there may be oversights. Please assume that anything not mentioned has not been checked. We do not offer support or warranty for any changes in condition or malfunctions after receipt. Please purchase only if you can agree to this. As this is a used item, returns are not accepted.