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Konica Henanon AR 50mm 1.4 issue

Discussion in 'Adapted Lenses' started by Julius, Jun 7, 2012.

  1. Julius

    Julius Mu-43 Regular

    65
    Aug 28, 2011
    Italy
    Giulio
    I have a strange issue with my konica 50mm 1.4, a purple spot that appears only when stopped down to f11 and f16.
    The lens is free of dust, fungus and debris.
    P1190052.
    DMC-G2    ---       f/1.0    1/60s    ISO 100


    So to make a test i've decided to shoot direct light to point out the spot with three konica lenses all stopped down at f16:

    50mm 1.4
    50mm1_4.
    DMC-G2    ---       f/1.0    1/400s    ISO 100


    40mm 1.8:
    40mm1_8.
    DMC-G2    ---       f/1.0    1/125s    ISO 100


    50mm 1.7
    50mm1_7.
    DMC-G2    ---       f/1.0    1/320s    ISO 100


    As you can see no spot are visible from the other two lenses.
    Suggestion?
     
  2. MichaelJC

    MichaelJC Mu-43 Regular

  3. Warren T.

    Warren T. Mu-43 Veteran

    344
    Mar 10, 2010
    San Francisco
    On my recent Oregon road trip, I found out that my Konica Hexanon 40mm f1.8 does the same thing. I wanted to shoot a sunset with it, and I found that annoying flare/spot problem, which makes the lens useless for sunset shots. So I switched to using my native Lumix lenses instead (14mm, 20mm, and 45-200mm).

    --Warren
     
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