19mm F2.8 for full-frame mirrorless cameras from CANON

CANON filed a patent discussing optical designs of 19mm F2.8 for 35mm full-frame mirrorless cameras.

【公開番号】特開2021-67826(P2021-67826A) click here
【公開日】令和3年4月30日(2021.4.30)
【発明の名称】光学系およびそれを有する撮像装置

Embodiment 1
Focal length: 19.50 mm
F number: 2.88
Half angle of view (degree): 47.99
Image Height: 21.65 mm
Lens length: 96.33 mm
Back focus: 18.34 mm


Embodiment 5
Focal length: 19.29 mm
F number: 2.86
Half angle of view (degree): 48.30
Image Height: 21.65 mm
Lens length: 96.59 mm
Back focus: 18.43 mm