Power on confirmation Shutter Flash firing Video recording Lens extension and retraction Aperture blade opening and closing The above functions have been confirmed. There is dust on the lens, but I don't think there is any mold. ※ Please note that this is a used item, and I do not possess the specialized knowledge of a camera store, 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 purchase only if you understand and accept this. As this is a used item, returns are not accepted.