New Patent: Canon EF-S 18-300mm F3.5-5.6 IS OPTICAL FORMULA

Canon 18-300mm lens patent

According to the CanonNews, Canon has just filed a new patent for EF-S 18-300mm F3.5-5.6 IS lens for APS-C DSLR cameras with a larger zoom ratio of 16x.

  • focal length           18.09   131.43    294.86
  • F number               3.49     4.58        5.76
  • Half angle of view 37.06    5.93        2.65
  • Image height         13.66   13.66      13.66
  • Lens length         201.18    235.70   245.66
  •  BF                        41.46      59.71    56.04

Read More Canon Lens Patent

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