Prakticar Electric Lens

Discussion in 'Collector's Corner' started by tempra, Oct 11, 2006.

  1. tempra

    tempra TPF Noob!

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    amongst the things I bought last week is a Prakticar Electric f2.8 28mm lens, it has glass to die for and I thought i'd look it up om the net, however most of the search results I'm getting are for pentacon lenses, and pictures show they are prakticar pentacons or pentacon electrics.

    Has anyone come across this lens before?

    The part that screws into the camera (m42) actually unscrews from the main lens body and it has a slider thing on it that I can't see what purpose this has, the lens is made in japan, and I know Praktica is East German.

    Anyone any clues?

    Signed: clueless, Oxford
     
  2. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    Prakticars were made in both East Germany (rare) and Japan. The 28/2.8 is a great lens, despite its low price. One interesting fact, the East german Prakticars were 29mm, not 28mm.

    Unfortunately, I don't know much else about this lens than you do... Anyone else? ;)
     
  3. Don Simon

    Don Simon TPF Noob!

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    Hmm, just going by other m42 lenses, could the slider thing be the switch that chooses either manual or automatic aperture selection? Try closing down the aperture a bit, then turn the slider and see if it opens and closes the aperture. Or of course it could be something completely different - I too know nothing about this specific lens :scratch:
     
  4. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    Z... Can you post a pic. of the lens with that slider thingie? I'm curious now...
     
  5. darin3200

    darin3200 TPF Noob!

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    Well the old m42's had a slider on the barrel of the lens that you could set it to manual or auto aperature. It was just like a little focusing ring near the screw mount but didn't go all the way around. The m42's have a little pin coming out the end which ends up near the base. When you trip the shutter a little metal plate below and in front of the mirror pushes in the pin and it stops the lens down.

    I've got a prakticar 28mm f/2.8 but it's a b-bayonnet
     
  6. Don Simon

    Don Simon TPF Noob!

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    /\
    ||
    ||

    Edit: Second time I've been beaten to a post today... I really must learn to type faster :p


    I can't seem to find any pics of this Prakticar on the internet so I'm not sure if what I'm thinking of is the same as the 'slider' on that lens, but here's some photos of the auto/manual aperture switch...

    [​IMG]

    [​IMG]

    Btw neither of those photos are mine, I just grabbed some off the web for convenience, hope that's ok and no-one gets sued :D. Anyway I've highlighted the switch on both. This part tends to vary in design but some version of it can be found on many m42 lenses - though there are exceptions, like preset lenses obviously but also like Fuji m42 lenses which only allow the camera to stop down and therefore have no switch enabling you to do it. Anyhoo do those switches seem similar to the slider on the Prakticar?
     
  7. tempra

    tempra TPF Noob!

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    Hmmm, I'll post a picture up tonight - got to go to work for the moment, but it's not like those Zaphod.
     
  8. tempra

    tempra TPF Noob!

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    OK, finally took some shots of the lens!

    Here are the markings on it

    [​IMG]

    Side view and you can see the slider at the back of the lens

    [​IMG]

    Close up of the slider

    [​IMG]

    And the actual lens separates into two!

    [​IMG]

    Any ideas???

    Oh and a little off topic, but a guy at work gave me this little beauty today with a 75-300 lens! - he's going to try and find the original lens that it came with, what a day! :D
    [​IMG]
     
  9. Mitica100

    Mitica100 Moderator Staff Member Supporting Member

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    Hmm... It looks like a 28mm lens that has an adapter of sorts, or a close up ring? Is there any way you can post a picture of the 'adapter', front and back (full ring in view)?
     
  10. tempra

    tempra TPF Noob!

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    these do?

    [​IMG]

    [​IMG]
     
  11. santino

    santino TPF Noob!

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    maybe without the adapter it's for rangefinders (uncoupled of course) :D
    is it m42 too?
     
  12. tempra

    tempra TPF Noob!

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    Yes it's M42 on both, itwon't screw in without the adaptor as it hits the mirror on the SLR - but yeah I suppose it could be for non SLR cameras with the depth.
     

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