Canon Patent for EF 16-40mm f/4 Wide-Angle Zoom Lens

Canon has filed a new patent in Japan. The new patent describes the EF 16-40mm f/4 wide-angle zoom lens which is designed for full-frame Canon DSLRs.

This patent application could be a sign that a replacement for the venerable Canon EF 17-40mm f/4L USM lens which was introduced in 2003.

The new Canon EF 16-35mm f/2.8 III wide-angle zoom lens is already in the works and expected to arrive in 2016.

Canon EF 16-40mm f/4 Wide-Angle Zoom Lens Patent

canon-patent-for-ef-16-40mm-f4-wide-angle-zoom-lens

  • Patent Publication No. 2015-206976
    • Published 2015.11.19
    • Filing date 2014.4.23
  • Example
    • Zoom ratio 2.36
    • Focal length 16.48 24.40 38.90
    • F-number 4.12 4.12 4.12
    • Half angle (in degrees) 52.70 41.56 29.08
    • Image height 21.64
    • Overall length of the lens 177.74 162.40 159.73
    • BF 38.00 45.51 63.40

via Egami