Sigma 12-24mm f/4 DG HSM Art

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Lens Specifications
Name Sigma 12-24mm f/4 DG HSM Art
Image Circle 35mm
Type Wide Zoom
Focal Length 12 - 24mm
APS Equivalent 1.5x: 18 - 36mm; 1.6x: 19.2 - 38.4mm
Max Aperture f/4
Min Aperture f/22
Diaphragm Blades 9 (rounded)
Lens Construction 16 elements in 11 groups, including 1 hybrid aspherical, 1 SLD and 4 FLD elements
Diagonal Angle of View (Based on image circle) 122 - 84.1 degrees
Focus Details Internal; HSM with full-time manual override
Front Element Rotation No
Zoom System Rotary
Closest Focus 24cm / 9.5 in.
Magnification Ratio 0.2x / 1:5
Filter Size N/A
Dimensions(Length x Diameter) 131.5mm x 102mm / 5.18 in. x 4.01 in.
Weight 1.15kg / 2.54 lbs
Notes AF Mounts: Canon EF, Nikon F, Sigma SA; Dust- and splash-proof construction; Compatible with the optional Sigma USB Dock
Typical Online Price US$1,600 (Avail. Late Oct 2016)