400mm/F2.8, 500mm/F4, 600mm/F4 and 800mm/F5.6 from CANON

CANON filed a patent of 400mm/F2.8, 500mm/F4, 600mm/F4 and 800mm/F5.6 for a 35mm full-frame sensor camera.

【公開番号】特開2019-194630(P2019-194630A) click here
【公開日】令和1年11月7日(2019.11.7)
【発明の名称】光学系及びそれを有する撮像装置

600 mm, f/4
Specification and lens arrangement of embodiment 1
Focal length: 584.99 mm
F no: 4.12
ω : 2.12
Image height: 21.64 mm
Lens length: 476.28 mm
Back focus: 87.97 mm


500 mm, f/4
Specification and lens arrangement of embodiment 2
Focal length: 489.05 mm
F no: 4.12
ω : 2.53
Image height: 21.64 mm
Lens length: 411.08 mm
Back focus: 86.24 mm


400 mm, f/2.8
Specification and lens arrangement of embodiment 3
Focal length: 392.56 mm
F no: 2.90
ω : 3.15
Image height: 21.64 mm
Lens length: 371.16 mm
Back focus: 59.99 mm


800 mm, f/5.6
Specification and lens arrangement of embodiment 4
Focal length: 778.44 mm
F no: 5.80
ω : 1.59
Image height: 21.64 mm
Lens length: 489.01 mm
Back focus: 48.66 mm