Vivitar Series One 90-180/4.5 Flat Field Macro and Pentax K10D

Discussion in 'Pentax' started by David Goldstein, Mar 6, 2007.

  1. I received my new Pentax K10D today. The main reason I got it is because I
    have some excellent manual focus lenses that I wanted to use on it. One of
    those is a Vivitar Series One 90-180/4.5 K-mount lens--an extraordinary
    lens. Unfortunately, there is a metal collar that partially surrounds the
    rear element that prevents the lens from mounting on the camera. The other
    K-mount lenses I have mount without difficulty. Has anyone had any
    experience with this problem. If I could get the collar off the lens and
    could grind it down, I believe the lens would fit but I am not sure how to
    do this (it would be too risky to try to do this with collar mounted because
    it is so close to the rear element. Any help would be appreciated. Thanks.
     
    David Goldstein, Mar 6, 2007
    #1
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  2. David Goldstein

    Paul Mitchum Guest

    Are you sure it's a K-mount lens? Vivitar made lenses in other mounts
    that look like K-mounts, such as Yashica/Contax.
     
    Paul Mitchum, Mar 6, 2007
    #2
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  3. It is definitely a K-mount lens. I have used it for years on a Pentax K
    mount film body.
     
    David Goldstein, Mar 6, 2007
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