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Minolta Rokkor RF 1600mm f/11 mirror lens


  • this super telephoto lens introduced in 1974 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


  • 1600mm focal length and field of view (1.6°) at infinity focus
  • fixed f/11 aperture
  • lens elements, ? groups (multicoated)
  • closest focus
  • mm filter thread but mount turns when you focus + mm rear filter
  • mm diameter, mm long and g


photo/minolta1600mmf11.txt · Last modified: 2014/05/17 23:37 by gary1

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