venerdì 20 gennaio 2012

Canon 55-110mm f/2.0 lens patent

Canon 55 110mm f2.0 lens patent Canon 55 110mm f/2.0 lens patent
Canon filed a patent 2012-8344 in Japan for a 55-110mm f/2.0 zoom lens:
  • Release date: January 12th, 2012
  • Filing date: June 24th, 2010
  • Focal length: 55.5 - 112.2mm
  • Aperture: f/2.0
  • 2x zoom
  • Half angle of view: 13.4181 - 6.712°
  • 18 elements in 15 groups

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