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

Canon filed a new patent for the EF 24-70mm f/2.8L IS USM lens. This is the image stabilized version of the Canon EF 24-70mm f/2.8L II USM standart zoom lens. The rumores has been surfaced last year for the patented EF 24-70mm f/2.8L IS USM lens.

Now Egami spotted this lens which is in testing for a long time. Canon’s new EF 24-70mm f/2.8L IS USM lens now surfaced again with a filed patent and seems to be a popular lens in the lineup.

Below are the translated patent details of the EF 24-70mm f/2.8L IS USM.

Canon EF 24-70mm f/2.8L II USM standart zoom lens is currently priced for $2,299.00 at Amazon.

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

ef-24-70mm-f-2.8-l-is-usm-lens-patent

  • Patent Publication No. 2013-182246
    • Publication date 2013.9.12
    • Filing date 2012.3.5
  • Example 1
    • Zoom ratio 2.75
    • Focal length f = 24.70-36.42-67.88mm
    • Fno. 2.91
    • Half angle ω = 41.22-30.71-17.68 °
    • Image height 21.64mm
    • 164.87-172.85-196.79mm overall length of the lens
    • BF 39.07-44.44-54.56mm
    • 20 pieces of 13-group lens configuration
    • Four four-sided aspherical
  • Example 2
    • Zoom ratio 2.76
    • Focal length f = 24.70-34.88-68.18mm
    • Fno. 2.91
    • Half angle ω = 41.22-31.81-17.61 °
    • Image height 21.64mm
    • 165.79-174.26-199.67mm overall length of the lens
    • BF 38.47-42.81-58.00mm
    • 20 pieces of 15-group lens configuration
    • Three 3 aspherical surface
  • Example 3
    • Zoom ratio 3.22
    • Focal length f = 24.70-39.67-79.43mm
    • Fno. 2.91
    • 41.22-28.61-15.24 ° angle of view
    • Image height 21.64mm
    • 161.98-171.74-200.99mm overall length of the lens
    • BF 38.35-46.17-57.64mm
    • 20 pieces of 13-group lens configuration
    • Four four-sided aspherical
  • Canon patent
    • 5-group zoom of positive and negative positive positive and negative
    • Antivibration (fourth lens group)

via EG