INA 200mm f4.5 - strange lens

Discussion in 'Adapted Lenses' started by punkman, Feb 14, 2012.

  1. punkman

    punkman Mu-43 Regular

    151
    Dec 30, 2011
    Europe
    This is a strange lens I got, that won't focus to infinity. It has a removable M42 mount with a "P" marking. I assume that means it's for Pentax M42 not something other mount with threads of the same size.

    <a href="http://www.23hq.com/punkman/photo/7633635">
    7633635_6131497a1c939c57c8c0098a82db4dae_large. "567" width="756" />
    </a>

    It won't focus to infinity on my M42 to m4/3 adapter, which I've used with various M42 lenses and they all focus past infinity.

    I removed the M42 mount from the lens, it was held in place with 3 small screws. That shaved off a few mm. I held it with my hand up to the M42 to M4/3 adapter and it still didn't reach infinity.

    A picture taken with this lens.

    <a href="http://www.23hq.com/punkman/photo/7633634">
    7633634_3a32915705bccb063962837c47a0d367_large. "567" width="756" />
    </a>

    Ideas?
     
  2. mister_roboto

    mister_roboto Mu-43 Top Veteran

    637
    Jun 14, 2011
    Seattle, WA, USA
    Dennis
    Vinson is the manufacturer, sometimes as Ina Vinson or Vinson Ina (something like that). They're a Japaneses company in the 60's and 70's that made re-bagged lenses usually from Sankyō Kōki Komura. I *think* that's what you've got.

    It screws into a M42 adapter correctly though? No slack or anything?