EXCERPT page containing first few paragraphs. 2023-03-29 06:10:42
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QC: 50/0.95 Noctilux-M ASPH
Issue summary
A brand-new 50/0.95 Noctilux develops a stuck diaphragm (sticks hard, but can be loosened with a few minutes of jiggling).
Backfocus was a problem initially, resolved by adjustment.
Resolution
Lens sent to Leica USA for repair, difficulty reproducing sticky diaphragm, but unclear why.
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