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A question about Pentacon Lenses

Classic Models & Marques - www.amateurphotographer.co.uk
HI,

I like some others here have a strange (sad ??)_weakness for the Praktica brand, and have amassed quite a collection, now I have two Prakticar (B mount) 50mm 1.8 lenses, both are marked as Pentacon Prakticar 50mm F1.8, but one is somewhat larger than the other, and the coating seems different.

I would like to understand why they are different, does anyone know ?

Thanks

Rich

 
Date: Oct 12, 2017   


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