OTQNO
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- Production era - 1959-19??
- Code number - 16468
- Type - Visoflex ring addapter used with OUAGO and Elmar (II) f= 9 cm 1:4 lens head to extend the close focus range:
- One x OTQNO = 2 feet - EF = 1.5 x
- Two x OTQNO = a little under 20 inches (image shown) - EF = 1.7 x
- Source
- Dennis Laney's Leica Accessory Guide (1st edition) pgs 49-50 courtesy of Mike Butkus
