Canon Patents Next Generation EF 300mm f/2.8L IS
A Canon patent has been published which shows a new optical formula for an EF 300mm f/2.8L IS. This will likely be the patent for the next generation of Canon’s EF 300mm f/2.8L IS which is currently in it’s second generation. The patent doesn’t give us any real indicator of when we could expect to see an EF 300MM f/2.8L IS III but there have been whisperings recently that Canon are actively working on updating the entire range of ‘big white’ lenses to improve optical performance and reduce weight.
Patent Publication No. 2016-173439 (Google Translated)
- 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
Check out the current EF 300mm f/2.8L IS II USM HERE.