Fast prime lenses, 16mm to 34mm, from SIGMA

SIGMA filed a patent of many wide angle prime lenses for mirrorless cameras with 35 mm full-frame sensor.

【公開番号】特開2020-16755(P2020-16755A) click here
【公開日】令和2年1月30日(2020.1.30)
【発明の名称】結像光学系

Embodiment 1: 34mm F1.8 DG DN
Focal length: 33.99 mm
F number: 1.85
Angle of view: 67.63
Image height: 21.63 mm
Lens length: 100.00 mm



Embodiment 2: 28mm F1.8 DG DN
Focal length: 27.99 mm
F number: 1.85
Angle of view: 78.24
Image height: 21.63 mm
Lens length: 95.01 mm



Embodiment 3: 24mm F1.8 DG DN
Focal length: 24.00 mm
F number: 1.86
Angle of view: 90.09
Image height: 21.63 mm
Lens length: 90.00 mm



Embodiment 4: 20mm F1.8 DG DN
Focal length: 20.59 mm
F number: 1.86
Angle of view: 98.81
Image height: 21.63 mm
Lens length: 100.00 mm



Embodiment 5: 18mm F1.8 DG DN
Focal length: 18.60 mm
F number: 1.87
Angle of view: 104.50
Image height: 21.63 mm
Lens length: 100.03 mm



Embodiment 6: 16mm F2 DG DN
Focal length: 16.54 mm
F number: 2.06
Angle of view: 110.91
Image height: 21.63 mm
Lens length: 104.04 mm



Embodiment 7: 18mm F2.8 DG DN
Focal length: 18.60 mm
F number: 2.90
Angle of view: 104.53
Image height: 21.63 mm
Lens length: 80.00 mm