Two New RF Lens Patents: RF 50mm f/1.8 and RF 70-250mm f4

Canon recently has filed two new lens patent for Canon RF mount: RF 50mm f/1.8 and RF 70-250mm f/4.

RF 50 mm f / 1.8
[Publication number] JP2019-184748 (P2019-184748A) click here
[Publication date] Ryowa October 24, 2019 (October 24, 2019)
[ Title of Invention]
Specification and lens arrangement of embodiment 1
Focal length: 48.70 mm
F no: 1.85
ω: 23.95
Image height: 21.64 mm
Back focus: 16.63 mm

RF 70 – 250 mm f/4
【公開番号】特開2019-184632(P2019-184632A) click here
【公開日】令和1年10月24日(2019.10.24)
【発明の名称】ズームレンズ及びそれを有する撮像装置
Specification and lens arrangement of embodiment 6
Focal length: 72.10 131.78 242.00 mm
F no: 4.10 4.10 4.10
ω : 16.70 9.32 5.11
Image height: 21.64 21.64 21.64 mm
Back focus: 12.95 25.54 36.63 mm