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Canon patent for new 50mm f/1.4 lens

A new patent of a 50mm f/1.4 lens was filed by Canon. However the patent is based on the AF speed improvements. Just see the 50mm f/1.4 lens patent’s details

patent

  • Patent Publication No. 2015-138121
    • Published 2015.7.30
    • Filing date 2014.1.22
  • Example 1
    • Focal length 49.10
    • F number 1.45
    • Half angle (in degrees) 23.78
    • Image height 21.64
    • Overall length of the lens 100.16
    • BF 38.10
  • Canon patents
    • Positive ShiboTadashi
    • Inner focus (part of the first group)

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