Canon Patent for EF 16-35mm f/2.8 Mark III Lens

Canon has filed a new patent in Japan. The new patent describes the next EF 16-35mm f/2.8L wide-angle zoom lens which we might call it EF 16-35mm f/2.8 Mark III.

The new Canon f/2.8 wide-angle zoom lens is already in the works and according to latest Canon rumors, the next version of EF 16-35mm f/2.8L lens will be released in the fourth quarter of 2015.

See patent details below.

Canon EF 16-35mm f/2.8 Mark III Lens Patent Details


  • Patent Publication No. 2014-206674
    • Published 2014.10.30
    • Filing date 2013.4.15
  • Example 1
    • Zoom ratio 2.06
    • Focal length f = 16.49-23.74-33.94mm
    • Fno. 2.91
    • Half angle of view ω = 52.69-42.35-32.51 °
    • BF 38.74-48.38-63.65mm’

New Canon f/2.8 wide-angle zoom lens set to replace the EF 16-35mm f/2.8L II USM lens. Earlier its release date scheduled for 2016, but now it is said to become available after the introduction of the EF 35mm f/1.4L II lens.

via: EG