The shutter wouldn't fire even after winding. Lens extension and retraction Opening and closing of the internal blades 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 shop, so 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.