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

• 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