Telephoto zoom lenses for 35mm full-frame mirrorless cameras from CANON

CANON filed a patent describing optical designs of telephoto zoom lens for 35mm full-frame mirrorless cameras.

【公開番号】特開2021-56407(P2021-56407A) click here
【公開日】令和3年4月8日(2021.4.8)
【発明の名称】ズームレンズおよびそれを有する撮像装置

Embodiment 1
Zoom ratio 2.68
Focal length 72.27 135.02 193.89 mm
F number 4.08 4.08 4.12
Half angle of view（°） 16.67 9.10 6.37
Image height 21.64 21.64 21.64 mm
Lens length 137.50 175.84 193.12 mm
BF 14.44 24.23 29.66 mm


Embodiment 2
Zoom ratio 4.82
Focal length 101.59 200.00 490.00 mm
F number 4.60 5.09 6.80
Half angle of view（°） 12.02 6.17 2.53
Image height 21.64 21.64 21.64 mm
Lens length 222.29 279.43 312.29 mm
BF 21.06 29.20 64.12 mm


Embodiment 3
Zoom ratio 2.69
Focal length 72.13 100.00 194.06 mm
F number 2.89 2.89 2.91
Half angle of view（°） 16.70 12.21 6.36
Image height 21.64 21.64 21.64 mm
Lens length 161.59 187.06 220.03 mm
BF 15.86 20.68 31.81 mm


Embodiment 4 (for APS-C sensor)
Zoom ratio 4.24
Focal length 56.90 130.00 241.30 mm
F number 4.68 5.88 6.55
Half angle of view（°） 13.50 6.00 3.24
Image height 13.66 13.66 13.66 mm
Lens length 102.01 140.24 153.08 mm
BF 13.47 21.19 39.32 mm


Embodiment 5
Zoom ratio 3.75
Focal length 103.39 196.91 387.69 mm
F number 5.77 7.10 8.24
Half angle of view（°） 11.82 6.27 3.19
Image height 21.64 21.64 21.64 mm
Lens length 165.42 201.96 235.42 mm
BF 13.85 33.27 57.50 mm


Embodiment 6
Zoom ratio 3.88
Focal length 100.04 198.04 387.80 mm
F number 5.77 7.10 8.24
Half angle of view（°） 12.20 6.23 3.19
Image height 21.64 21.64 21.64 mm
Lens length 159.40 202.97 229.40 mm
BF 10.02 28.12 62.23 mm