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Canon EF-M 70-400 F4.5-7.2 STM Lens Patent


A new patent surfaced over the web that shows patent of a new all-rounder lens for the Canon Mirrorless camera system., Canon is also expected to announce new EOS M3 camera very soon,

Patent details

  • Patent Publication No. 2014-228734 (Google Translated)
  • Published 2014.12.8
  • Filing date 2013.5.23

Example 3

  • Zoom ratio 5.58
  • The focal length f = 69.59-251.52-388.00mm
  • Fno. 4.68-6.30-7.00
  • Half angle ω = 11.11-3.11-2.02 °
  • Image height 13.66mm
  • Overall length of the lens 155.01-227.97-240.02mm
  • BF 15.81-37.15-46.87mm
  • Inner focus

Take a look at more Canon Patents

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