Vivitar 90-230 Aug 2, 2006 19:27:53 GMT -5 Quote Select PostDeselect PostLink to PostBack to Top Post by byuphoto on Aug 2, 2006 19:27:53 GMT -5 I got this lens off ebay. It seems to have been made by Tokina but other than that there is not much mentioned about it. It has a lot of buttons that I do not know w hat they do