Translate this blog into your language

Thursday, April 17, 2014

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



Egami has uncovered another Canon patent for the EF 24-70mm f/2.8L IS lens. Frankly, I was surprised the EF 24-70mm f/2.8L II lens released last year did not come with Image Stabilization. MichaelDanielHo.com

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 ? = 41.21-31.57-17.65 °
  • Image height 21.64mm
  • 223.94-207.87-180.56mm overall length of the lens
  • BF 38.31mm

No comments: