M645 2x converter question

Discussion in 'Medium Format' started by andy_gulliver, Sep 16, 1997.

  1. andy_gulliver

    andy_gulliver

    A couple of local photo shops have 2X converters for the M645 s/h at reasonable prices (under 100ukp).

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    One is Vivitar - not sure about the other, but it isn't Mamiya.

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    I know that TC's are generally recommended for longer lenses, but I would like to get a focal length for portraits on a tight budget and was contemplating a 2X TC with my 70/2.8 to get a 140/5.6 for <100ukp rather than trying to find the 300+ukp for a s/h 150/3.5

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    Has anyone out there tried this sort of combination and can comment?

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    Regards
    AndyG
     
    andy_gulliver, Sep 16, 1997
    #1
  2. byron_marr

    byron_marr

    As far as I can tell, they won't work with lenses shorter than 150mm. I also know that they won't work on the Zooms
     
    byron_marr, Sep 17, 1997
    #1
  3. jack_hagedorn

    jack_hagedorn

    I use a Cambo 2x adapter with my Mamiya 645 Super and a normal lense and it works fine.
     
    jack_hagedorn, Sep 19, 1997
    #1
  4. terry___

    terry___

    I've used a Vivitar 2x on my 80mm 2.8 and as long as you open
    up 2 stops for any situation other than TTL metered, you are ok.
     
    terry___, Aug 3, 1998
    #1

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