24-70mm F4, 16-34mm F4, and 12-24mm F4 from CANON

CANON filed patents of 24-70mm F4, 16-34mm F4, and 12-24mm F4 for 35mm full-frame mirroless cameras.

24-70mm F4
【公開番号】特開2020-140060(P2020-140060A) click here
【公開日】令和2年9月3日(2020.9.3)
【発明の名称】ズームレンズ及びそれを有する撮像装置

Embodiment 1
Zoom ratio: 2.75
Focal length: 24.73 40.97 67.90 mm
F number: 4.12 4.12 4.12
Half angle of view: 41.19 27.84 17.67
mage height: 21.64 21.64 21.64 mm
Lens length: 145.62 138.11 159.46 mm
Back focus:18.00 23.52 49.52 mm


16-34mm F4 and 12-24mm F4
【公開番号】特開2020-140142(P2020-140142A) click here
【公開日】令和2年9月3日(2020.9.3)
【発明の名称】撮像光学系およびそれを有する撮像装置

Embodiment 1: 16-34mm F4
Zoom ratio: 2.06
Focal length: 16.49 23.84 33.97 mm
F number: 4.12 4.12 4.12
Half angle of view: 52.68 42.22 32.49
Image height: 21.64 21.64 21.64 mm
Lens length: 138.64 133.28 136.75 mm
Back focus: 38.49 48.58 62.18 mm


Embodiment 5: 12-24mm F4
Zoom ratio: 2.06
Focal length: 12.33 16.86 23.40 mm
F number: 4.12 4.12 4.12
Half angle of view: 60.32 52.08 42.76
Image height: 21.64 21.64 21.64 mm
Lens length: 155.71 148.83 150.16 mm
Back focus: 38.45 47.41 60.45 mm