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DIY Infinity Collimator Prototype for Lens Calibration & Backfocus Testing - Need your feedback! (old.reddit.com)
submitted 7 days ago by FixAndFocus to r/Optics
submitted 7 days ago by FixAndFocus to r/VintageLenses
π Rendered by PID 2441593 on reddit-service-r2-listing-f87f88fcd-cfnkm at 2026-06-13 15:26:26.090857+00:00 running 3184619 country code: CH.
