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Jupiter 2.0/50 mm

  
  

PT2905. Prototype lens under name "Jupiter 50/2". Very few samples released by KMZ. Significally changed optical scheme of  the "Classic" Jupiter-8 ("Sonnar") lens.  Without focusing lever, replaced by a large textured ring (similar to "Industar-26M"). 

Lens #000001 from Alexey Puchkov (Russia) collection.

 

PT2905 - Jupiter prototype lens  #000001.