Lens mount diameters: Micro Four Thirds, Nikon 1, Pentax Q

Discussion in 'Mirrorless Digital Cameras' started by NK Guy, Apr 16, 2012.

  1. Howdy! I'm trying to find out the lens mount diameters for Four Thirds, Micro Four Thirds, Nikon 1 (CX), and Pentax Q lens mounts. But the manufacturers seem to be refusing to publish them.
    Anyone out there who might have these stats, or have these cameras and a handy pair of calipers?
    Thank you!
     
  2. your main concern should be the refistration distand.
    yjr 4/3 is shorter that all film slr's and these older lenses can be adapted to the 4/3 system
     
  3. M4/3 the 'hole' is 41.15 or 41.17mm with 'flanges' reducing this to 39.86 when measured one flange only. So I make that the flange is 1.29mm [ flange or tongue?]
    That is measuring an Oly E-PL1
    The lens is easier to measure with the 'barrel' 38.35mm plus flanges [2] 40.68mm
    Pany 14-42.
    Caliper is un-named digital
     
  4. You will find lens to sensor distances at this useful site
    http://www.markerink.org/WJM/HTML/mounts.htm
    M4/3 is shorter than 4/3 and the diameter is smaller than 4/3. My feeling is that some E-bay vendors don't know the difference. 4/3 is to an older Olympus standard. I'm not exactly clear on this but did get a 4/3 adaptor in error, mine, when I was first looking last year.
     

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