Canon has filed a new lens patent for the RF 70-400mm f/4.5-5.6L IS USM Lens, which will be an excellent super telephoto zoom lens for Canon EOS R and EOS RP and it is expected to be announced in the first half of 2020.
Canon RF 70-400mm f/4.5-5.6L IS USM Lens Patent:
- Focal length: 72.62mm 168.49mm 389.89mm
- F number: 4.07 5.10 5.85
- Half angle of view: 16.59° 7.32° 3.18°
- Image height: 21.64mm 21.64mm 21.64mm
- Total lens length: 187.91mm 236.14mm 268.26mm
- BF: 13.80mm 27.53mm 35.04mm