1936 Uncoated 5cm F1.5 Sonnar, "another one" converted to Leica

Discussion in 'Adapted Lenses' started by Brian, Dec 14, 2014.

  1. Brian

    Brian Super Moderator Subscribing Member

    Apr 3, 2013
    I saw this one on Ebay and did a double-take on the Serial number. Same batch as my Coated 1936 Sonnar, "1909928". This one is "1909982". I had to have it. Received it, had never been opened and interior glass was hazed, aperture had a lot of oil. The inner retaining ring for the front triplet was cross-threaded, and "Big Bertha" and I struggled for 30 minutes to get it out. Unusable, threads destroyed on the ring and spanner slots were torn up. I had a spare from a Jupiter-3 that replaced it perfectly. Glass and blades all cleaned up, bought a J-3 with damaged filter ring- came out nice. I'll do a comparison between this and the Coated lens. The latter- most likely from a test batch, the vacuum deposition equipment had been installed at the factory at about this time. Another collector on RFF had one slightly earlier than mine, same batch

    Fence post test on the M Monochrom,

    16004802231_4d083b0087_o. Sonnar 5cm f1.5, uncoated

    which agrees perfectly with the TTL viewer that I used to set focus.


    Wide-Open at F1.5, "Subject moved while focusing"...

    15997267256_8da84e930e_o. Signal Hill
     
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