Here are the leaked specifications of the upcoming five new Sigma lenses:
Sigma 28mm f/1.4 DG HSM Art lens:
- Lens construction: 17 elements in 12 groups (including 2 FLD and 3 SLD elements)
- Shortest shooting distance: 28 cm
- Maximum photographing magnification: 1:5.4
- Filter diameter: 77 mm
- Size: φ 82.8 mm x 107.7 mm
- Weight: to be determined
- Mount: Sigma, Canon, Nikon, Sony E
Sigma 40mm f/1.4 DG HSM Art lens:
- The first Sigma lens developed as a cine lens
- Lens construction: 16 elements in 12 groups (including 3 FLD and 3 SLD elements)
- Shortest shooting distance: 40 cm
- Maximum shooting magnification: 1:6.5
- Filter diameter: 82 mm
- Size: φ 87.8 mm x 131 mm
- Weight: 1200 g
- Mount: Sigma, Canon, Nikon, Sony E
Sigma 70-200mm f/2.8 DG OS HSM Sports lens:
- Lens construction: 22 elements (including 9 FLD and 1 SLD elements)
- Minimum shooting distance: 1.2 m
- Maximum magnification: 1:4.8
- Number of diaphragm blades: 11
- Filter diameter: 82 mm
- Size: φ 94.2 mm x 202.9 mm
- Weight: 1805 g
- Compatible with TC-1401 / TC-2001 teleconverters
- Mount: Sigma, Canon, Nikon
Sigma 60-600mm f/4.5 - 6.3 DG OS HSM Sports lens:
- Lens construction: 25 elements in 19 groups (including 3 FLD and 1 SLD elements)
- Shortest shooting distance: 60-260 cm
- Maximum photographing magnification: 1:3.3 (200 mm)
- Image stabilization effect: 4 steps
- Filter diameter: 105 mm
- Size: φ120.4 mm x 268.9 mm
- Weight: 2700 g
- Compatible with TC-1401 / TC-2001 teleconverters
- Mount: Sigma, Canon, Nikon
Sigma 56mm f/1.4 DC DN Contemporary mirrorless lens:
- Lens construction: 10 elements in 6 groups (including one SLD element)
- Shortest shooting distance: 50cm
- Maximum shooting magnification: 1:7.4
- Filter diameter: 55mm
- Size: φ 66.5 mm x 59.5 mm
- Weight: 280 g
- Mount: Micro Four Thirds, Sony E
Source: Nokishita, via NikonRumors