This is an enlarging lens. I received it from an acquaintance, but it makes a light rattling sound when shaken. I don't know what the sound is. Both the filter ring side and the mount side have dents and scratches as if they've been bumped. The aperture ring moves normally. The optics are unknown as I have no way to check them. I am selling this as a junk item, so it will be sold as-is. Would anyone be interested in purchasing it with the understanding that it is in its current condition?