Canon has just filed a new patent for EF 300mm F2.8L IS USM lens. Compared to the current EF 300mm f/2.8L IS USM II lens, this new telephoto prime lens will be lighter and smaller.
Detail translated by Google:
- Patent Publication No. 2016-173439
- Published 2016.9.29
- Filing date 2015.3.17
- Example
- 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
Source: EGAMI
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