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  1. #1

    Join Date
    Nov 2010
    Location
    Germany
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    Diopters for Mamiya 645 1000s prism

    I just got an unmetered prism for my Mamiya 645 1000s but need a -3 diopter as i don't like to shoot wearing glasses. Diopters for the newer Super/Pro/TL-prisms are widely available, but i couldn't find any -3 for the older ones.

    I already checked Ebay, KEH, B&H etc. and sent an email to Mamiya Germany but didn't get a reply yet. Does someone know a source for the old correction lenses or if there are some diopters from other cameras which will fit?

    Regards,
    Matthias

  2. #2
    aoresteen's Avatar
    Join Date
    Jun 2004
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    Newnan, GA, USA
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    Diopters from a Pentax Spotmatic/K body, Contax/Yashica RTS FR etc, Ricoh will fit. These use an eyecup to hold the round drop in diopter. Olympus OM round diopters should fit (but the Olympus eyecup will not).

    I think early Canon & Minoltas use the same eyecup fitting.

    I use the same +2 diopter in an eyecup on my M645 prism, Spotmatic SL, and Yashica FX-D cameras.
    Tony
    Newnan, GA

    Cambo 23SF, Hasselblad, Mamiya M645, Rolleiflex 2.8C
    Rollei 4x4 Grey
    Leica M4-P M3 IIIf RD Contax IIa Nikon SP
    Olympus OM-1 OM-2

    http://www.oresteen.com/ROLLEI4X4.htm

  3. #3

    Join Date
    Nov 2010
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    Thanks Tony! I will try to find one of those. If all else fails, i could ask my optician to grind one for me (which would have the added benefit of a possible correction for astigmatism).



 

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