I accidentally dropped my Sony SEL20F18G prime lens from a height of about 1 foot onto a linoleum floor. While the lens looks fine externally, I can feel slight movement inside when I turn it upside down. It feels like a component drops into place when I rotate it so that the mount end is on the table, and again if the front end is on the table.
Could this be a sign of internal damage or something to be concered about?