New Patent: Canon EF 300mm f/2.8L IS USM Lens


Canon has filed a new lens patent for EF 300mm f/2.8L IS USM lens, which will be designed for Canon full frame DSLR cameras.


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

Patent Publication No. 2016-173439

  • Published 2016.9.29
  • Filing date 2015.3.17


  • Focal length 292.46
  • F-number 2.91
  • Angle of view 4.23
  • Image height 21.64
  • Overall length of the lens 273.95
  • BF 60.81

via: Egami