New Patent: Canon EF 300mm f/2.8L IS USM Lens
Canon has filed a new lens patent for EF 300mm f/2.8L IS USM lens, which will be designed for Canon full frame DSLR cameras.
Take a look at the patent details below translated by Google.
Patent Publication No. 2016-173439
- Published 2016.9.29
- Filing date 2015.3.17
- Focal length 292.46
- F-number 2.91
- Angle of view 4.23
- Image height 21.64
- Overall length of the lens 273.95
- BF 60.81