Konica Henanon AR 50mm 1.4 issue

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

  1. Julius

    Julius Mu-43 Regular

    Aug 28, 2011
    Real Name:
    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.

    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

    40mm 1.8:

    50mm 1.7

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

    MichaelJC Mu-43 Regular

  3. Warren T.

    Warren T. Mu-43 Veteran

    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).