Power on confirmation Shutter Lens extension and retraction Aperture blade opening and closing The above have been confirmed. There is dust and clouding on the lens, but I don't think there is any mold. When returning the loupe, you need to manually return the lever. I don't know if this is the specification. ※ Please note that this is a used item, and I do not have the specialized knowledge of a camera shop, so there may be oversights. Please assume that anything not mentioned has not been checked. We cannot provide support or warranty for any changes in condition or malfunctions after receipt. Please purchase only if you can agree to this. Please refrain from returns as this is a used item.