Japanese website Hi-Lows-Note has find new lens patent for Sigma L-mount full frame mirrorless lenses: Along with recently released Sigma 35mm f/1.2 DG DN Art Lens (B&H Photo Video/Adorama), Sigma also has patent for Sigma 50mm f/1.2 and Sigma 40mm f/1.2 L-mount lenses.
50 mm, f/1.2 Specification and lens arrangement of embodiment 1
Focal length: 50.99 mm
F no: 1.25
2ω : 45.97
Image height: 21.63 mm
Lens length: 154.20 mm
40 mm, f/1.2 Specification and lens arrangement of embodiment 4
Focal length: 41.35 mm
F no: 1.26
2ω : 57.17
Image height: 21.63 mm
Lens length: 157.00 mm
35 mm, f/1.2 Specification and lens arrangement of embodiment 6
Focal length: 35.99 mm
F no: 1.26
2ω : 64.62
Image height: 21.63 mm
Lens length: 140.00 mm
