New Patent: Canon EF-S 55-200mm f/4-6.3 STM Lens

Canon has filed a new lens patent for EF-S 55-200mm f/4-6.3 STM Lens, which is expected to replace the popluar EF-S 18-200mm f/3.5-5.6 IS Lens. The further details are still unknown.

Take a look at the patent details below translated by Google.

Patent Publication No. 2015-197655

  • Published 2015.11.9
  • Filing date 2014.4.3

Example 1

  • Zoom ratio 3.68
  • Focal length 54.36 133.00 199.99
  • F-number 4.14 5.22 6.32
  • Half angle of 14.11 5.86 3.91
  • Image height 13.66
  • Overall length of the lens 129.39 161.77 167.04
  • BF 46.78 66.90 78.18

via: Egami

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