If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.
I recently purchased an used C/Y 85/1.4 . The glass and aperature all look great but when I tilt the lens side to side I can hear a clunking sound as if something is moving. I don't see anything moving. Any ideas what this could be? Thanks.