Canon EF 50mm f/1.8 IS Lens Patent

Canon filed a patent for a new prime lens. The new patent includes Canon EF 50mm f/1.8 IS USM lens and could be the replacement of the current 50mm f/1.4 lens. A new image stabilized Canon 50mm lens said to be announced in 2013.

Even a new 50mm f/1.2L lens is in testing. Canon has three 50mm lenses in their line-up. They are the EF 50mm f/1.2L, EF 50mm f/1.4 and the EF 50mm f/1.8.  It is possible Canon has decided to add IS to the replacement of current EF 50mm f/1.4 lens.

Canon-EF-50mm-f-1.8-IS-USM-lens-patent

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

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