OUAGO

• Production era - 1959-1983
• Code number - 16467
• Type - Visoflex II /Visoflex II helical focusing mount for 90mm f/4 Elmar or Elmar (II) f= 9 cm 1:4 lens head.
• Range - Infinity to 3.25 feet - EF = 1.2 x
  • Plus one OTQNO = 2 feet - EF = 1.5 x
  • Plus two OTQNO = A little under 20 inches - EF = 1.7 x
• Compatibility - Note: 90 Elmar lens heads above serial 1572401 are suitable for Visoflex use without modification. Lenses from 697901-1572400 require factory adjustment and below 697900 are suitable but may not reach infinity without adjustment.
• Source
  • Dennis Laney's Leica Accessory Guide (1st edition) pgs 49-50 courtesy of Mike Butkus
• Forum discussion
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