Question about Vivitar Telephoto 100mm f/3.5 Macro Manual Focus Lens for Canon FD

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Ol' Vivitar 200mm telephoto lens

This may be a stupid question....I have a 200mm Vivitar lens that I am using with my Mamiya/sekor dsx 1000 camera. I just got the lenses,
Is lenses suppose to have an f. stop diphram built in. I don't see one.

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  • bergie1492 May 01, 2008

    Yes. Do you think it is broken?



  • bergie1492 May 01, 2008


    thanks, is it broken?

  • bergie1492 May 01, 2008

    Bad lense, thanks a lot.



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  • Edward Stewart
    Edward Stewart May 01, 2008

    With the lense off of the body and the looking through the lense backwards twist the fstop ring. Do you see the Heaxgon light pattern getting larger and smaller. If not your fstop adjustment may not be working correctly


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