Sigma 20mm f/1.4 DG HSM Art

 
Lens Reviews / Sigma Lenses i Lab tested
Lens Specifications
Name Sigma 20mm ƒ/1.4 DG HSM Art
Image Circle 35mm
Type Wide Prime
Focal Length 20mm
APS Equivalent 1.5x: 30mm; 1.6x: 32mm
Max Aperture ƒ/1.4
Min Aperture ƒ/16
Diaphragm Blades 9 (rounded)
Lens Construction 15 elements in 11 groups, including 1 double-sided aspherical, 2 FLD and 5 SLD elements
Diagonal Angle of View(Based on image circle) 94.5 degrees
Focus Details HSM (Hypersonic Motor) with full-time manual focus override
Front Element Rotation No
Zoom System n/a
Closest Focus 27.7cm / 10.9 in.
Magnification Ratio 0.14x / 1:7.1
Filter Size TBD mm
Dimensions(Length x Diameter) 91.4mm x 129.5mm / 5.1 in. x 3.6 in.
Weight 963g / 34 oz
Notes Available AF Mounts: Sigma, Canon, Nikon; Compatible with Sigma's USB Dock and Mount Conversion Service
Typical Online Price US$900 (Avail. Nov. 2015)