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photo:nikon1100mmf11

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Nikon F Reflex-Nikkor 1000mm f/11 mirror lens

introduction

  • this super telephoto lens was 1st introduced in 1965 and is a catadioptric mirror lens, and as with all such mirror lenses, share the following characteristics:
    • manual focus
    • fixed aperture (in this case f/11)
    • virtual elimination of chromatic aberration as uses mirror rather than lenses
      • also means focus position for infrared photography is the same as for light photography
    • central mirror:
      • allows much more compact lens length as the optic path is reflected internally twice
      • by necessity, blocks some of the light and thus causes:
        • decrease in image contrast
        • characteristic “doughnut” shaped bokeh imagery in out of focus areas
  • NB. the 1st Nikkor mirror lens was designed for rangefinder cameras in 1959 and was a 100cm (1000mm) f/6.3 which had close focus of 30m and weighed 10kg!
  • the 1st version of a 1000mm f/11 was in 1965, had 5 elements in 5 groups and close focus to 8m
  • a new design was introduced in 1974 allowing for screw on rear filters instead of a turret design
  • the last version was introduced in 1976 and included NIC coating and improved handling
  • Nikon stopped making mirror lenses in 2005

specs

  • 1000mm focal length and field of view (2.5°) at infinity focus
  • fixed f/11 aperture
  • 5 elements in 5 groups
  • NIC coating
  • closest focus 8m giving 1:7.1 macro
  • built-in telescopic type lens hood
  • rear 39mm screw in filter
  • 119mm diam x 241mm long and 1900g

reviews

photo/nikon1100mmf11.txt · Last modified: 2014/05/17 13:21 by gary1