Any sensor coverage issue with M39 lenses?

Discussion in 'Adapted Lenses' started by qball, Nov 19, 2010.

  1. qball

    qball Mu-43 Regular

    Jun 19, 2010
    I'm looking at a long telephoto lens in m39 mount.

    I'm wondering if there is any potential sensor coverage issues with M39 mount lenses adapted to micro 4/3 cameras.


  2. Ulfric M Douglas

    Ulfric M Douglas Mu-43 Hall of Famer

    Mar 6, 2010
    I don't think so.
    The M39 lenses are all designed for full-frame film coverage : 4/3rds sensor is much smaller.
  3. Narnian

    Narnian Nobody in particular ...

    Aug 6, 2010
    Midlothian, VA
    Real Name:
    Richard Elliott
    I think the only sensor coverage problem with M39 lenses is on the collapsible ones - they might cover the sensor a little too closely ...
  4. qball

    qball Mu-43 Regular

    Jun 19, 2010
    Sweet. Thanks!
  5. deirdre

    deirdre Mu-43 Top Veteran

    Aug 9, 2010
    Yeah, wedge any collapsible lenses open, but other than that, you're fine.
  6. Brian S

    Brian S Mu-43 Top Veteran

    Apr 11, 2009
    You typically pay more for a Long Telephoto (105mm and higher) lens in 39mm Leica mount than their SLR counterparts. The optics are usually identical. Be careful of buying a Soviet SLR M39 mount lens: finding an adapter might be difficult.

    The FSU 135/4 comes in M39 RF coupled mount for the rangefinder camera, and 39mm Zenit mount for the SLR. The adapter required for each is different.