RF 17-60mm, 17-70mm, 17-85mm, F4-5.6 from CANON

CANON filed a patent describing standard zoom lenses for 35mm full-frame mirrorless cameras.

【公開番号】特開2021-182053(P2021-182053A)　click here
【公開日】令和3年11月25日(2021.11.25)
【発明の名称】ズームレンズおよび撮像装置

Embodiment 1
Focal length (mm): 17.50 28.00 58.00
F number: 4.10 4.50 5.70
Half angle of view (degree): 51.50 38.16 20.77
Maximum image height (mm): 22.00 22.00 22.00
Image height (mm): 19.47 20.98 21.94
Lens length (mm): 108.50 114.27 158.50
BF (mm): 21.38 33.45 49.01


Embodiment 2
Focal length (mm): 17.50 35.00 68.00
F number: 4.10 4.50 5.70
Half angle of view (degree): 51.50 32.15 17.93
Maximum image height (mm): 22.00 22.00 22.00
Image height (mm): 19.43 21.75 22.10
Lens length (mm): 123.50 130.13 173.50
BF (mm): 18.27 33.13 42.65


Embodiment 3
Focal length (mm): 17.50 40.00 83.50
F number: 4.10 4.50 5.70
Half angle of view (degree): 51.50 28.81 14.76
Maximum image height (mm): 22.00 22.00 22.00
Image height (mm): 19.43 22.05 22.41
Lens length (mm): 130.50 135.64 183.50
BF (mm): 14.89 34.26 43.12


Embodiment 4
Focal length (mm): 17.50 35.00 68.00
F number: 4.10 4.50 5.70
Half angle of view (degree): 51.50 32.15 17.93
Maximum image height (mm): 22.00 22.00 22.00
Image height (mm): 19.39 21.53 22.27
Lens length (mm): 126.50 125.61 176.50
BF (mm): 14.57 27.63 38.40