Anybody have any experience of this lens? I have acquired one in mint condition that essentially cost me nothing. Looks like a version of the Vivitar 28-200 listed on Dyxum without the rubberised grip. Who were Sirius? Is it worth having a play with it or selling on? I'm guessing with the proper licence from Minolta, Sony users would have no issues with this lens? I'm trying to rid myself of ultrazooms as I think I take better pictures when working within parameters (setting aside lens IQ).