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Tuesday, July 23, 2013

Canon EF 50mm f/1.8 IS Lens Patent

The Japanese Photography Blog, Egami has discovered a Canon patent for the EF 50mm f/1.8 IS lens. You can read the original article on their website. The current EF 50mm f/1.4 lens is an excellent product but is in need of an upgrade. It is possible Canon has decided to add IS to its replacement although it is by no means certain.

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 ? = 22.78 °
  • Image height 21.64mm
  • The overall length of the lens 76.78mm
  • BF 37.84mm
  • 8 pieces of 7 lens configuration

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