OTQNO

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OTQNO.jpg

  • Production era - 1959-1983
  • Code number - 16468
  • Type - Visoflex ring addapter used with OUAGO and 90mm f/4 Elmar or 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 (shown ghosted) - 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