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
- 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