OTRPO

• Production era - 1959-19??
• Code number - 16471
• Type - Visoflex extension tube for near focusing for Visoflex II/ III for use with with universal focusing mount OTZFO and lens heads
  • 1:3.5 / 65 Elmar - EF = 3.4 x
  • 1:3.5 / 65 Elmar-V - EF = 3.4 x
  • Elmarit f= 9 cm 1:2.8 - EF = 2.4 x
  • Elmar f= 13.5 cm 1:4.5 - EF = 2 x
  • Hektor f= 13.5 cm 1:4.5 - EF = 2 x
  • 135mm f/4 Tele-Elmar - EF = 2.6 x
• Source
  • Dennis Laney's Leica Accessory Guide (1st edition) page 49 courtesy of Mike Butkus
  • Center image courtesy of Jan Dvorak
• Forum discussion
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