Canon Patent: EF 50mm f/1.8 IS

Canon EF 50mm f 1.8 IS USM lens

A new patent from Canon now listed on Egami. This new lens patent is Canon EF 50mm f/1.8 IS USM lens. This lens could be the replacement of current 50mm f/1.4 lens. We had heard replacement of 50mm f/1.4 since last year. CR also said a new 50mm f/1.2L lens is in testing.

Patent Publication No. 2013-142782

  • Publication date 2013.7.22
  • Filing date 2012.1.11

Example 1

  • Focal length f = 51.51mm
  • Fno. 1.85
  • Half angle ω = 22.78 °
  • Image height 21.64mm
  • The overall length of the lens 76.78mm
  • BF 37.84mm
  • 8 pieces of 7 lens configuration

via: EG