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Thread: Minimum focusing distance with Fotoman 810PS and Fujinon 250/f6.3 CMW helical focus!

  1. #1

    Join Date
    Sep 2012
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    35

    Smile Minimum focusing distance with Fotoman 810PS and Fujinon 250/f6.3 CMW helical focus!

    Hello! I am trying to figure out what would be the minimum focusing distance with this combination of camera, helical focusing system and the Fujinon 250 lens.
    I appreciate any sort of help!!!
    best regards and thanks to anyone who answers! pietro

  2. #2
    ic-racer's Avatar
    Join Date
    Feb 2007
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    4,737

    Re: Minimum focusing distance with Fotoman 810PS and Fujinon 250/f6.3 CMW helical fo

    Using the thin lens formula and an 18mm long throw focus mount I get 3.7 meters.

  3. #3
    Moderator
    Join Date
    Jan 2001
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    6,299

    Re: Minimum focusing distance with Fotoman 810PS and Fujinon 250/f6.3 CMW helical fo

    Quote Originally Posted by ic-racer View Post
    Using the thin lens formula and an 18mm long throw focus mount I get 3.7 meters.
    Alas, the eBay listing says the HFM is a short one, and marked for 210mm to boot. Not a good match to this lens. Looks like they're shoveling out the warehouse. < sigh >

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