First off, thank God I finally found a forum that is not based soley on digital photography. My setup(try not to laugh): Yashica FX-2, Yashica 50mm 1:1.9 lens, Yashica 75-200mm 1: 4.5 lens, Tokina 2x converter, 60" collapsable tripod, and an equally cheap auto flash from Vivitar. I am new to being enthused about photography and this was my setup in college except the 200mm and the 2x. My aunt recently was kind enough to give me those two because she had doubles of them and really was wanting to move to digital anyway. That inturn sparked my new enthusiasm as soon as I saw what a difference the lenses make. Anyway, to get to my point, I was looking at this 500mm Vivitar lens on ebay.CLICK HERE here are my questions... Would this lens work with my 2x converter making it a 1000mm? Would this lenses macro capability be more powerful than my current 75-200mm lense? How does Vivitar compare to other lens makers?