The shutter wouldn't fire even after winding. Lens extension/retraction Aperture blade opening/closing These functions have been confirmed. There is mold on the lens. Please consider this as a junk item, assuming it needs 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 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. Returns are not accepted for used items.