Another New Canon EF 24-70mm f/2.8L IS Patent

Current EF 24-70mm f 2.8L II USM
Current EF 24-70mm f 2.8L II USM

Canon filed another new patents in Japan for the upcoming rumored EF 24-70mm f/2.8L IS USM lens. There is already a patent for this lens last year.

canon 24 70 is


Description and self-interpretation of the patent literature
  • Patent Publication No. 2014-52413,2014-52445
    • Publication date 2014.3.20
    • Filing date 2012.9.5
  • Example 1
    • Zoom ratio 2.75
    • Focal length f = 24.7-35.21-68mm
    • Fno. 2.9
    • Half angle ω = 41.21-31.57-17.65 °
    • Image height 21.64mm
    • 223.94-207.87-180.56mm overall length of the lens
    • BF 38.31mm

via: EG

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