Canon has just filed two new patents for two focal zoom lens: RF 14-40 and RF 16-40. Both of these lenses are constant F4.0
Examples of the embodiments include;
- Focal distance 14.43 21.62 40.74
- F number 4.12 4.12 4.12
- Half field angle 56.30 45.01 27.97
- Image height 21.64 21.64 21.64
- Whole length of the lens 138.31 128.15 129.29
- BF 12.84 12.84 12.84
- Focal distance 16.41 23.12 38.80
- F number 4.12 4.12 4.12
- Half field angle 52.82 43.10 29.14
- Image height 21.64 21.64 21.64
- Whole length of the lens 118.88 112.53 114.89
- BF 12.78 1 2.78 12.78
Japan Patent Application 2019-066653
Read More Canon Lens Patent
See also 2019 Canon Lens Deals