CARL ZEISS JENA 28mm f/2.8 Praktica B Mount

Discussion in 'Digital Photography' started by ncmcolt, Mar 31, 2015.

  1. ncmcolt macrumors newbie

    Mar 31, 2015
    Would like to clean my practika lens, mould inside, but not certain how to go about it. There are no screws for the rear mount, so does it mean I have to go through the front of the lens. There is nothing on the net I can find about the lens. I know it is old but very sharp and served me well. I would be thankful for any help
  2. killwilly macrumors newbie

    Sep 6, 2013

    The link below is for the 50mm M42 fit, perhaps yours is similar.
  3. ncmcolt thread starter macrumors newbie

    Mar 31, 2015
    CARL ZEISS JENA 28mm f/2.8 Praktica B Mount

    This is helpful.
    I did manage to disassemble the lens. Compared to most other lenses this Jenna was easy only 7 hefty screws. At the rear mount is a plastic cup that simply pulls out revealing four mount screws. This made it easy to get to the back of the lens. Aligning the helical focusing barrel is now the challenge.
    Trial and error. Trial and error....
    Thanks for the reply. That website is in my files
  4. Apple fanboy macrumors Penryn

    Apple fanboy

    Feb 21, 2012
    Behind the Lens, UK
    Your a braver man than me. Good luck!

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