Sigma 20mm f/1.4 DG DN Art

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Lens Specifications
Name Sigma 20mm f/1.4 DG DN Art
Image Circle 35mm
Type Wide Prime
Focal Length 20mm
APS Equivalent 1.5x: 30mm
Max Aperture f/1.4
Min Aperture f/16
Diaphragm Blades 11 (rounded)
Lens Construction 17 elements in 15 groups, with 2 SLD and 3 aspherical lens elements
Diagonal Angle of View(Based on image circle) 94.5 degrees
Focus Details Smooth, quiet and high-speed AF via stepping motor
Front Element Rotation No
Zoom System n/a
Closest Focus 23cm / 9.1in
Magnification Ratio 1:6.1
Filter Size 82mm
Dimensions(Length x Diameter) 111.2mm x 87.8mm / 4.4 in. x 3.5 in.
Weight 635g / 22.4 oz.
Notes Available AF Mounts: L-Mount, Sony E-Mount; dust- and splash-resistant construction
Typical Online Price US$899