I have been told Sigma will announce the two new wide angle primes in August. Here are the known specs:
- 20mm F1.4 DG DN Art
Lens configuration: 17 elements in 15 groups (2 SLD glasses, 3 aspherical lenses)
Number of aperture blades: 11 (circular aperture)
Minimum shooting distance: 0.23m
Maximum shooting magnification: 1: 6.1
Filter Diameter: 82mm
Size: φ87.8 x 111.2mm (E-mount version 113.2mm)
Weight: 635g (E-mount version 630g)
AF assist function
MFL switch (MF lock)
rear filter holder
lens heater retainer
152,900 yen including tax - 24mm F1.4 DG DN Art
Lens configuration: 17 elements in 14 groups (1 SLD glass, 2 FLD glasses, 4 aspherical lenses)
Number of aperture blades: 11 (circular aperture)
Minimum shooting distance: 0.25m
Maximum shooting magnification : 1: 7.1
Filter diameter:
72mm Size: φ75.7 x 95.5mm (E-mount version 97.5mm)
AF assist function
MFL switch (MF lock)
rear filter holder
lens heater retainer
Weight: 520g (E-mount version 510g)